Shivaji University, Kolhapur T.E. Mechanical Engineering ... · T.E. Mechanical Engineering Scheme of Teaching & Examination ... 3 Theory of Machines Khurmi R. S S. Chand Pub

Shivaji University, Kolhapur

T.E. Mechanical Engineering

Scheme of Teaching & Examination

SEMESTER V

S No. Subject L T P D

r

Total PT TW OE PO

E

Total

1. Theory of machine II 3 -- 2 -- 4 100 25 25 -- 150

2. Heat and mass

transfer

3 -- 2 -- 5 100 25 -- 25 150

3. Machine design I 3 -- 2 -- 4 100 25 -- -- 125

4. Metrology & Quality

Control

3 -- 2 -- 4 100 25 25 -- 150

5. Manufacturing

Engineering

3 -- 2 -- 4 100 25 -- -- 125

6. Control Engineering 3 -- 2 -- 5 100 25 -- -- 125

7. Workshop Practice

V

-- -- 2 -- 2 -- -- -- --

Total 18 12 30 600 175 50 25 850

Course Plan

Course Theory of Machines II Course Code

Examination

Scheme

Theory Term Work OE Total

Max. Marks 100 25 25 150

Contact

Hours/ week

3 2 -- 5

Prepared by Mr. Pandav A. N Date 28.04.2014

Prerequisites Knowledge of fundamental laws, force, moment and couple, resolution and

composition of force, system of forces, resultant, free body diagram.

also Basics of Displacement, Velocity,& Acceleration

Course Outcomes

At the end of the course the students should be able to:

CO1 Explain the basics of Gear, Gear Geometry, laws and types of gear profiles

CO2 Discuss the types of Gear trains and can calculate the speeds of elements in

epi-cyclic gear train

CO3 Discuss the effect of Gyroscopic couple and its effect on Aero plane, Ship,

Four-Wheeler, Two –Wheeler.

CO4 Comprehend the Principle of Static and Dynamic balancing of rotary and

reciprocating masses.

CO5 Explain the fundamentals of vibrations and also the types of vibrations.

CO6 To analyze the single degree freedom systems and understand the purpose

and types of damping.

CO7 To identify and describe the parameters of Forced vibrations

CO8 Analyze the Critical speed of shaft and evaluate natural frequency of shafts

with different type of end conditions.

Mapping of COs with POs

POs

COs

a b c d E f G h i j k l

CO1

CO2 √

CO3 √

CO4 √

CO5 √

C06 √

CO7 √

CO8 √

Course Contents

Unit No. Title No. of

Hours

Section I

1. Toothed Gearing

Geometry of motion, Gear geometry, Types of gear profile- involute

& cycloidal, Theory of Spur, Helical & Spiral gears, Interference in

involute tooth gears and methods for its prevention, Path of contact,

Contact ratio ,Efficiency and center distance of spiral gears.

05

2. Gear Trains

Types of Gear trains- Simple, Compound, Reverted, Epicyclic gear

train, Tabular method for finding the speeds of elements in epicyclic

gear train, Differential gear box. Equivalent mass and Moment of

Inertia applied to gear trains.

05

3.. Gyroscope

Gyroscopic couple, Spinning and Precessional motion, Gyroscopic

couple and its effect on – i) Aero plane ii) Ship iii) Four-Wheeler

iv) Two –Wheeler.

04

4. Balancing

Static and Dynamic balancing of rotary and reciprocating masses.

Primary and Secondary forces and couples. Direct and Reverse

cranks. Balancing of Single cylinder, Multi cylinder-Inline and V-

Engines for four wheeler.

06

Section II

5. Fundamentals of Vibrations

Basic concepts and definitions, vibration measuring parameters-

Displacement, Velocity and acceleration, Free and forced vibrations,

Equivalent Springs. Types of damping.

03

6. Single degree of freedom systems

Free vibrations with and without damping (Rectilinear, Torsional &

Transverse), degree of damping. Logarithmic decrement, equivalent

viscous damping, Coulomb damping.

06

7. Forced vibrations

Viscous damping, magnification factor, frequency response curves,

vibration isolation and transmissibility, forced vibrations due to

support excitation.

06

8. Critical speeds of shafts

Critical speed of shaft with and without damping, secondary critical

speed, natural frequency of shafts with different type of end

conditions.

05

Reference Books:

Sr. No. Title of Book Author Publisher/Edition Topics

1 Theory of Machines Rattan S.S Tata McGraw Hill Part I

2 Theory of Machines & Mechanisms Shigley Tata McGraw Hill 1,2

3 Theory of Machines Khurmi R. S S. Chand Pub. All

4 Mechanical Vibrations Grover G.K Nemchand Pub. Part II

5 Mechanical Vibrations S.S.Rao Pearson EdU. Pub. Part II

6 Theory of Machines by R.K.Bansal Laxmi pub. 1st to 4

th

7 Theory of Machines Dr. V.P.Singh Dhanpat Rai Pub. All

8 Mechanical Vibrations Dr. V.P.Singh Dhanpat Rai Pub. All

Scheme of Marks

Section Unit No. Title Marks

I 1 Toothed Gearing 16

I 2 Gear Trains 16

I 3 Gyroscope 16

I 4 Balancing 18

II 5 Fundamentals of Vibrations 08-16

II 6 Single degree of freedom systems 16

II 7 Forced vibrations 18

II 8 Critical speeds of shafts 08-16

Course Unitization

Section

Unit Course

Outcomes No. of Questions in

No. Title CAT-I CAT-II

I

1 Toothed Gearing CO1 Question of 15 marks

2 Gear Trains CO2 Question of 15 marks

3 Gyroscope CO3 Question of 15 marks

II

5 Fundamentals of

Vibrations CO5 Question of 15 marks

6 Single degree of

freedom System CO6 Question of 15 marks

7 Forced vibrations CO7 Question of 15 marks

Unit wise Lesson Plan

Section I

Unit

No

1 Unit Title Toothed Gearing Planned Hrs. 05

Unit Outcomes

At the end of this unit the students should be able to:

UO1 Understand the Gear Geometry, and Gear Profile. CO1

UO2 Explain the Parameters of the gears CO1

UO3 Identify the Interference in involute tooth gears and prevent it CO1

UO4 Define the Path of contact, Contact ratio, Efficiency and center distance

of spiral gears.

CO1

UO5 Solve Numerical problems on Path of contact, Contact ratio &,Efficiency CO1

Lesson schedule

Class

No.

Details to be covered

1 Geometry of motion, Gear geometry, Types of gear profile- involute & cycloidal,

2 Theory of Spur, Helical & Spiral gears,

3 Interference in involute tooth gears and methods for its prevention,

4 Path of contact, Contact ratio ,Efficiency and center distance of spiral gears.

5 Numerical problems on Path of contact, Contact ratio &,Efficiency

Review Questions

Q1 Derive an expression for the length of the arc of contact in a pair of

meshed spur gears.

CO1

Q2 State and prove the law of gearing. Show that involute profile satisfies

the conditions for correct gearing.

CO

Q3 Derive an expression for the centre distance of a pair of spiral gears. CO1

Q4 Define (i) normal pitch, and (ii) axial pitch relating to helical gears. CO1

Q5 Prove that for two involute gear wheels in mesh, the angular velocity

ratio does not change if the centre distance is increased within limits,

but the pressure angle increaseshe pitch circle diameter of the smaller of

the two spur wheels which mesh externally and have involute teeth is

100 mm. The number of teeth are 16 and 32. The pressure angle is 20°

and the addendum is 0.32 of the circular pitch. Find the length of the

path of contact of the pair of teeth.

CO

Section I

Unit

No

2 Unit Title Gear Train Planned Hrs. 06

Unit Outcomes


UO1 Explain the types of the gear trains CO2

UO2 Identify the elements of Epi-Cyclic Gear train CO2

UO3 Find the speeds of the elements of the Gear train by using Tabular

method

CO2

UO4 Explain the working of Differential gear Box CO2

UO5 Solve Numerical problems on Gear train CO2

Lesson schedule

Class

No.


1 Types of Gear trains- Simple, Compound, Reverted, Epicyclic gear train

2 Tabular method for finding the speeds of elements in epicyclic gear train,

3 Solve Numerical problems on Gear train by using Tabular method

4 Solve Numerical problems on Gear train by using Tabular method

5 Differential gear box. Equivalent mass and Moment of Inertia applied to gear

trains.

Review Questions

Q1 What do you understand by „gear train‟?

Discuss the various types of gear trains.

CO2

Q2 Explain briefly the differences between simple, compound, and epicyclic

gear trains. What are the special advantages of epicyclic gear trains?

CO2

Q3 How the velocity ratio of epicyclic gear train is obtained by tabular

method?

CO2

Q4 A compound epicyclic gear is shown diagrammatically in Figure. The

gears A, D and E are free to rotate on the axis P. The compound gear B

and C rotate together on the axis Q at the end of arm F. All the gears

have equal pitch. The number of external teeth on the gears A, B and C

are 18, 45 and 21 respectively. The gears D and E are annular gears. The

gear A rotates at 100 r.p.m. in the anticlockwise direction and the gear D

rotates at 450 r.p.m. clockwise. Find the speed and direction of the arm

and the gear E.

CO2

Section I

Unit

No

3 Unit Title Gyroscope Planned Hrs. 04

Unit Outcomes


UO1 Discuss the Gyroscopic Couple CO3

UO2 Differentiate Active and Reactive Gyroscopic Couple CO3

UO3 Explain the Gyroscopic effect on – i) Aero plane ii) Ship iii) Four-

Wheeler iv) Two –Wheeler.

CO3

UO4 Solve Numerical problems on Gyroscopic Couple CO3

Lesson schedule

Class

No.


1 Gyroscopic couple, Spinning and Precessional motion,

2 Gyroscopic couple and its effect on – i) Aero plane ii) Ship

3 Gyroscopic couple and its effect on – iii) Four-Wheeler iv) Two –Wheeler.

4 Numerical problems on Gyroscopic Couple

Review Questions

Q1 Write a short note on gyroscope. CO3

Q2 What do you understand by gyroscopic couple ? Derive a formula for its

magnitude.

CO3

Q3 Explain the application of gyroscopic principles to aircrafts. CO3

Q4 Explain the effect of the gyroscopic couple on the reaction of the four

wheels of a vehicle negotiating a curve.

CO3

Section I

Unit

No

4 Unit Title Balancing Planned Hrs. 06

Unit Outcomes


UO1 Analyze Static and Dynamic balancing of rotary and reciprocating

masses

CO4

UO2 Explain the Direct and Reverse cranks CO4

UO3 To Perform the Balancing of Single cylinder, Multi cylinder-Inline and

V-Engines for four wheeler analytically.

CO4

UO4 Solve Numerical problems on Static and Dynamic balancing CO4

Lesson schedule

Class

No.


1 Static and Dynamic balancing of rotary masses

2 Static and Dynamic balancing and reciprocating masses.

3 Primary and Secondary forces and couples.

4 Direct and Reverse cranks.

5 Balancing of Single cylinder, Multi cylinder-Inline and V-Engines for four

wheeler.

6 Numerical problems on Balancing of Single cylinder, Multi cylinder-Inline and V-

Engines for four wheeler.

Review Questions

Q1 Explain precisely the uses of turning moment diagram of reciprocating

engines.

CO4

Q2 Discuss the turning moment diagram of a multicylinder engine. CO4

Q3 Define „inertia force‟ and „inertia torque‟. CO4

Q4 The inertia of the connecting rod can be replaced by two masses

concentrated at two points and connected rigidly together. How to

determine the two masses so that it is dynamically equivalent to the

connecting rod ? Show this.

CO4

Section II

Unit

No

5 Unit Title Fundamentals of Vibrations Planned Hrs. 03

Unit Outcomes


UO1 Explain Basic concepts and definitions of Vibrations CO5

UO2 Identify the vibration measuring parameters & Define Free and forced

vibrations &

CO5

UO3 Analyze Equivalent Spring- Mass System CO5

Lesson schedule

Class

No.


1 Basic concepts and definitions

2 Vibration measuring parameters- Displacement, Velocity and acceleration, Free

and forced vibrations.

3 Equivalent Springs. Types of damping

Review Questions

Q1 What are the causes and effects of vibrations? CO5

Q2 Define, in short, free vibrations, forced vibrations and damped

vibrations

CO5

Q3 Discuss briefly with neat sketches the longitudinal, transverse and

torsional free vibrations.

CO5

Q4 Deduce an expression for the natural frequency of free transverse

vibrations for a simply supported shaft carrying uniformly distributed

mass of m kg per unit length.

CO5

Section II

Unit

No

6 Unit Title Single degree of freedom systems Planned Hrs. 06

Unit Outcomes


UO1 Explain the Single degree of freedom systems CO6

UO2 Identify the Free vibrations with and without damping (Rectilinear,

Torsional & Transverse)

CO6

UO3 Determine the Natural Frequency of Mechanical System by using D‟

Alembert‟s Principle

CO6

UO4 Derive the General Solution to Differential Equation and types of

damped Systems

CO6

UO5 Solve Numerical problems on Natural Frequency of the Systems CO6

Lesson schedule

Class

No.


1 Free vibrations with and without damping (Rectilinear, Torsional & Transverse),

degree of damping

2 General Solution to Differential Equation and types of damped Systems

3 Logarithmic decrement

4 Equivalent viscous damping, Coulomb damping.

5 Numerical problems on Natural Frequency of the Systems

6 Numerical problems on Natural Frequency of the Systems

Review Questions

Q1 Derive the General Solution to Differential Equation and types of

damped Systems

CO6

Q2 Explain & Derive an expression of Logarithmic decrement as applied to

damped vibrations

CO6

Q3 Explain The Rayleigh‟s method for finding the natural frequency of

vibratory system.

CO6

Section II

Unit

No

7 Unit Title Forced Vibrations Planned Hrs. 06

Unit Outcomes


UO1 Explain the Forced Vibrations CO7

UO2 Identify the Forced vibrations with damping. CO7

UO3 Explain the forced vibrations due to support excitation, magnification

factor, and draw frequency response curves.

CO7

UO4 Derive the General Solution to Differential Equation for forced damped

vibrations with constant harmonic excitation.

CO7

UO5 Solve Numerical problems on above parameters CO7

Lesson schedule

Class

No.


1 Forced vibrations with viscous damping

2 Magnification factor

3 Frequency response curves

4 Vibration isolation and transmissibility

5 Forced vibrations due to support excitation.

6 Numerical problems

Review Questions

Q1 Derive the expression for amplitude of steady vibrations, phase angle

for a spring mass damper system subjected to external periodic force

CO7

Q2 Explain the term magnification factor and obtain expression for it? CO7

Q3 Explain salient features of frequency response curves and phase

frequency

CO7

Section II

Unit

No

8 Unit Title Critical Speeds of the shaft Planned Hrs. 05

Unit Outcomes


UO1 Explain the Critical speed of shaft CO8

UO2 Identify the secondary critical speed of the shaft. CO8

UO3 Derive the expression for Critical speed of shaft with different end

conditions

CO8

UO4 Solve Numerical problems on above parameters CO8

Lesson schedule

Class

No.


1 Critical speed of shaft without damping

2 Critical speed of shaft with damping

3 Secondary critical speed,

4 Natural frequency of shafts with different type of end conditions.

5 Numerical problems

Review Questions

Q1 Derive the expression for Critical speed of shaft without damping CO8

Q2 Explain the term Secondary critical speed? State the Significance. CO8

Q3 Why shafts are run above the critical speed in case of high speed

applications?

CO8

Model Question Paper

Course Title : Theory of Machines II

Duration

03 hrs

Max.

Marks

100

Instructions: Draw Neat Sketches whenever Necessary

Attempt any three questions from each section.

Figures to the right indicate full marks.

Assume Suitable data if necessary and state it clearly

Section-I

Marks

1 a Derive an expression for minimum number of teeth on wheel in order

to avoid interference for spur gear in mesh.

06

b Two gears having 30 and 40 involute teeth respectively are in mesh.

The pressure angle is equal to 20, module is 12 mm. Line of contact

on each side of the pitch point is two third of maximum possible

length. Find the height of addendum for each wheel, total length of

path of contact and the contact ratio.

10

2 a Prove the relation for torque required in order to accelerate a geared

system

06

b Fig. 2b shows the arrangement of wheels in a compound Epicyclic

gear train. The sun wheel S2 is integral with the annular wheel A1.

The two arms are also integral with each other. Zs1 = Zs2 = 24; ZA1

=ZA2 =96.

(I) If the shaft rotates at 2000 rpm, find the speed of speed of

shaft Y, when A2 is fixed.

(II) At the speed does Y rotate when A2 rotates 200 rpm, in the

same direction as S1, which is rotating at 2000 rpm.

Fig. 2b

10

3 a What do you understand by gyroscopic couple? Derive a formula for

its magnitude.

06

b A four wheel vehicle a mass 2500 kg has a wheel base 2.5 m track

width 1.5 m, and height of centre of gravity 0.6 m above the ground

level and lies at 1 m from the front axle. Each wheel has an effective

diameter of 0.8 m and the moment of inertia of 0.8 kgm². The drive

shaft, engine flywheel and transmission are rotating at four times the

speed of road wheels, in clockwise direction when viewed from the

front, and is equivalent to a mass of 80 kg having a radius of gyration

100 mm. if the vehicle is tacking a right turn of 60 m radius at 60

km/hr, find the load on each wheel.

10

4 a A shaft carries two masses m1 and m2 distance L apart rotating with

shaft at eccentricities r1 and r2 resp. The eccentricities r1 and r2 are

parallel and in the same sense. The shaft is to be balanced by a mass

M attached to the shaft at an eccentricity R. determine the distance

between planes of rotation of I) m1 and M ii) m2 and M in terms of

m1, m2, r1, r2, and L.

06

b A,B,C, and are four masses carried by rotating shaft at radii

180,240,120 and 150 mm resp. and the mass of B, C and D are 30, 50

& 40 kg respectively. The Planes containing masses B & C are

300mm apart. The angle between planes containing B& C is 90

degrees. B & C make angles of 210o

and 120o respectively with D in

the Same Sense find

i. The magnitude and the angular position of mass A

ii. Position of planes A & D

12

5 a Give the Classification of Vibration based on Various Parameters. 06

b Explain The Rayleigh‟s method for finding the natural frequency of

vibratory system.

08

6 a Derive an expression for logarithmic decrement and explain its

significance.

08

b A machine of 75 kg mass is mounted on three parallel springs, each of

stiffness 10N/mm and is fitted with a dashpot, to dampout vibrations.

During vibrations it is found that the amplitude of vibration diminishes

from 40 mm to 6 mm in two complete cycles.

Determine :1)The damping coefficient of at unit velocity

II) The frequency ratio of damped vibrations to undamped vibrations

III) The time period of damped vibrations.

08

7 a Derive an expression for amplitude ratio of a single degree freedom

system subjected to harmonic excitation F sinwt

08

b A mass of 90 kg is suspended from a spring which deflects by

20mm.if the damping coefficient is 0.25 times the critical damping

coefficient, find the natural frequency of damped vibrations and the

ratio of successive amplitude for damped vibrations. If the mass is

subjected to a harmonic force of 300N determine the amplitude of

10

forced vibrations and phases angle.

8 a Explain the term magnification factor with the help of frequency

response curves.

08

b A vertical shaft of 12mm diameter rotates in journal bearings and a

disc of mass 15 kg is mounted on the shaft at midspan. Determine the

critical speed of shaft rotation.

Assume E=2x

08

Assignments

List of experiments/assignments to meet the requirements of the syllabus

Assignment No. 1

Assignment Title CO1

Batch I

1. Experiment on Gyroscope.

2. Generation of involute profile using rack cutter method.

3. Problems on Epicyclic gear train using tabular method.

4. Balancing of rotary masses (Static and Dynamic)

5. Experiment on Longitudinal vibrations of helical springs.

6. Determination of logarithmic decrement (Free Damped

Vibrations) .

7. Forced vibration characteristics (Undamped and Damped

vibrations)

8. Experiment on Whirling of shaft

9. Industrial visit based on above syllabus. Experiment on

Gyroscope.

Batch II







Vibrations) .


vibrations)



Gyroscope.

Batch III







Vibrations) .


vibrations)



Gyroscope.

Batch IV







Vibrations).


vibrations)


9. Industrial visit based on above syllabus.

Course Plan

Course HEAT & MASS TRANSFER Course Code 45550

Examination

Scheme

Theory Term Work POE Total

Max. Marks 100 25 25 150

Contact

Hours/ week

3 25 25 150

Prepared by Mr.A.A.Patwegar Date 5/6/2014

Prerequisites The students should know about Laws of Thermodynamics ,modes of heat

transfer, basic concepts of Thermodynamics

Course Outcomes


CO1 Identifies the mode by which energy is transported

CO2 Develops the methods to accelerate or retard the rate of heat flow as per

requirement

CO3 Understand the basic laws of heat transfer.

CO4 Analyze problems involving steady state heat conduction in simple

geometries.

CO5 Obtain numerical solutions for conduction heat transfer problems

CO6 Understand the fundamentals of convective heat transfer process

CO7 Evaluate heat transfer coefficients for natural convection.

CO8 Evaluate heat transfer coefficients for forced convection

CO9 Analyze heat exchanger performance by using the method of log mean

temperature difference.

CO10 Analyze heat exchanger performance by using the method of heat exchanger

effectiveness.

CO11 Calculate radiation heat transfer between black body surfaces.

CO12 Calculate radiation heat exchange between gray body surfaces.

CO13 Obtain numerical solutions for radiation heat transfer problems

CO14 Analyze problems involving unsteady state heat conduction in simple

geometries.

CO15 Understand the basic laws of Mass transfer and compare between heat and

mass transfer


POs

COs

a b c d e f g h i j k l m n o

CO1 √ √ √ √ √ √

CO2 √ √ √ √ √ √

CO3 √ √ √ √ √ √

CO4 √ √ √ √ √

CO5 √ √ √ √ √

CO6 √ √ √ √ √ √

CO7 √ √ √ √ √

CO8 √ √ √ √ √

CO9 √ √ √ √ √ √ √

CO10 √ √ √ √ √ √ √

CO11 √ √ √ √ √

CO12 √ √ √ √ √

CO13 √ √ √ √ √

CO14 √ √ √ √ √

CO15 √ √ √ √ √

Course Contents


Hours

Section I

1. Modes of Heat Transfer

Modes of heat transfer. Basic laws of heat transfer, Introduction to

combined modes of heat transfer, Thermal conductivity and its

variation with temperature for various Engg. materials (Description

only). Nano fluids.

(02)

2. Chapter 2.1 – Steady State Heat Conduction

Derivation of Generalized Heat Conduction equation in Cartesian

co-ordinate, its reduction to Fourier, Laplace and Poisson‟s

equations. Generalized Heat conduction equation in cylindrical and

spherical coordinates (no derivation) and its reduction to one

dimension (1D), Heat conduction through plane wall, cylinder,

sphere; composites, critical radius of insulation for cylinder and

sphere. One dimensional steady state heat conduction with uniform

heat generation for wall & cylinder).

Chapter 2.2 –Extended Surfaces

Types and applications of fins, Heat transfer through rectangular and

circular fins. Fin effectiveness and efficiency, error estimation in

temperature measurement in thermo well. Applications of micro fins.

Chapter 2.3 – Unsteady State Heat Conduction

Systems with negligible internal resistance, Biot and Fourier number

and their significance, Lumped Heat capacity Analysis. Use of

Hiesler and Grober Charts. (No mathematical Treatment)

(06)

(03)

(02)

3. Radiation

Nature of thermal radiation, definitions of absorbitivity, reflectivity,

transmissivity, monochromatic emissive power. Total emissive

power and emissivity, Concept of black body& gray body,

Kirchhoff‟s law, Wein‟s law and Planck‟s law. Deduction of Stefan

Boltzmann equation. Lambert cosine rule, Intensity of radiation.

Energy exchange by radiation between two black surfaces with non-

absorbing medium in between and in absence of reradiating surfaces.

Geometric shape factor. Energy exchange by radiation between two

gray surfaces without absorbing medium and absence of re radiation

and Radiosity. Radiation network method, network for two surfaces

which see each other and nothing else.

(08)

Section II

4. Convection

Chapter 4.1

Concept of Hydrodynamic and thermal boundary layer, local and

average convective coefficient for laminar and turbulent for flat plate

and pipe.

Chapter 4.2 – Forced Convection

Dimensional analysis, Physical significance of dimensionless

numbers, Reynolds analogy for laminar flow, Numerical correlations

to solve various problems, Flow over Tube bundles

Chapter 4.3 – Natural Convection

(01)

(04)

(04)

Dimensional analysis, Physical significance of dimensionless

numbers, Numerical correlations to solve natural convection

problems, Combined free and forced convection problems.

5. Boiling and condensation

Pool boiling curves, Force boiling, Techniques for enhancement of

boiling, Nusselt‟s theory of condensation, Condensation number,

Film wise and drop wise condensation.

(02)

6. Heat Exchangers

Classification & Types of Heat exchangers, Fouling factor, and

Overall heat transfer coefficient, Analysis by LMTD and NTU

method for parallel and counter flow, Design consideration for Heat

exchangers. Heat pipe.

(06)

7. Mass Transfer

Introduction, Modes of mass transfer, Analogy between heat and

mass transfer, Mass diffusion (Mass basis, Mole basis), Fick‟s law of

diffusion, Significance of various dimensions numbers.

(02)

Reference Books:

Sr. No. Title of Book Author Publisher/Edition Units

1. Heat Transfer J.P. Holman McGraw Hill

Book Company,

New York

3,4,7

2. A text book of Heat Transfer D.S.Pavaskar Nishant

Prakashan

1to 6

3. Heat Transfer – A Practical

approach

Yunus -A –

Cengel

Tata McGraw

Hill

1 to 4,7

4. Heat and Mass Transfer R.K. Rajput, S. Chand &

Company Ltd.,

New Delhi.

110055

1 to 6

Scheme of Marks


1 1 Modes of Heat Transfer 16

2 Conduction 24

3 Radiation 18

2 4 Convection 20

5 Boiling and condensation 12

6 Heat Exchangers 20

7 Mass Transfer 6

Course Unitization

Section

Unit

No.

Title Course Outcomes No. of Questions in

CAT-I CAT-II

I 1 Modes of Heat

Transfer

CO1,CO3,CO5 Q1, Q2, &

Q3 Solve

any two

questions

2 Conduction CO2,CO4,CO5,CO14

3 Radiation CO3,CO11,CO12,CO13

II 4 Convection CO3,CO7,CO8 Q1, Q2, &

Q3 Solve

any two

questions

5 Boiling and

condensation

CO6,CO2

6 Heat Exchangers CO2,CO9,CO10

7 Mass Transfer CO15


Section I

Unit

No

1 Unit Title Modes of Heat Transfer

Planned

Hrs.

02

Unit Outcomes


UO1 Understand the basic modes of heat transfer CO1,CO3

UO2 Identifies the mode by which energy is transported CO1,CO3

UO3 Define Thermal conductivity and its variation with temperature for

various Engg. materials

CO5

Lesson schedule

Class

No.


1 Modes of heat transfer. Basic laws of heat transfer, Introduction to combined modes of

heat transfer

2 Thermal conductivity and its variation with temperature for various Engg. Materials

(Description only). Nano fluids.

Review Questions

Q1 Explain different modes of heat transfer with suitable example Also

explain modes of heat and transfer for each mode (Nov9)

CO1,CO3

Q2 Define thermal conductivity and explain how it varies with temperature

(May10)(May11)

CO5

Q3 A 150mm steam pipe has inside diameter of 120mm and outer diameter

of 120mm and outer diameter of 160mm It is insulated with asbestos The

steam temperature is 150°C and air temperature is 20°C h(steam

side)=100W/m2 -K h(air side)=30W/m

2 -K K(asbestos)=0.8W/m -K

K(steel)=42W/m –K how thick should the insulation be provide in order

to limit the heat losses to 2.1Kw/m2 (May11)

CO5

Q4 In an infinite slab of width of 2b ,in which heat is generated at the rate of

q units per unit volume the heat transfer coefficient at surface is hand

fluid temperature is Tf Derive an expression for temperature distribution

in a wall (Nov9)

CO5

Q5 The composite wall of an oven consists of three materials two of them of

known thermal conductivity Ka=w/m°K and Kc=50w/m°K and known

thickness La=0.3m and Lc=0.15mThe third material which is sandwiched

between material A&C but of known thicknessLb=0.15mbut of unknown

thermal conductivity Kb Under steady state operating conditions,

measurement reveals an outer surface temperature of material C is

20°C& the inner surface of A is 600°Cand oven air temperature is 800°C

CO5

the inside convective coefficient is 25w/m2What is the value of Kb?

Unit

No

2 Unit Title Conduction Planned

Hrs.

11

Unit Outcomes


UO1 Derive Generalized Heat Conduction equation in Cartesian co-ordinate,

its reduction to Fourier, Laplace and Poisson‟s equations

CO4,CO5

UO2 Understand Generalized Heat conduction equation in cylindrical and

spherical coordinates

CO4,CO5

UO3 Explain Heat conduction through plane wall, cylinder, sphere ,composites CO4,CO5

UO4 Explain critical radius of insulation and its significance CO4,CO5

UO5 Understand One dimensional steady state heat conduction with uniform

heat generation for wall & cylinder

CO4,CO5

UO6 Explain One dimensional steady state heat conduction without uniform

heat generation for wall & cylinder

CO4,CO5

UO7 Understand Fin and list Types and applications of fins CO2

UO8 Define Fin effectiveness and efficiency CO2

UO9 List Applications of micro fins. CO2

UO10 Explain Biot and Fourier number and their significance CO14

UO11 Understand Use of Hiesler and Grober Charts CO14

Lesson schedule

Class

No.


1 Derivation of Generalized Heat Conduction equation in Cartesian co-ordinate, its

reduction to Fourier, Laplace and Poisson‟s equations.

2 Generalized Heat conduction equation in cylindrical and spherical coordinates (no

derivation) and its reduction to one dimension (1D)

3 Heat conduction through plane wall, cylinder, sphere ,composites

4 critical radius of insulation for cylinder and sphere

5 One dimensional steady state heat conduction with uniform heat generation for wall &

cylinder

6 One dimensional steady state heat conduction without uniform heat generation for wall

& cylinder

7 Types and applications of fins

8 Heat transfer through rectangular and circular fins. Fin effectiveness and efficiency

9 Error estimation in temperature measurement in thermo well. Applications of micro

fins.

10 Systems with negligible internal resistance, Biot and Fourier number and their

significance

11 Lumped Heat capacity Analysis. Use of Hiesler and Grober Charts.

Review Questions

Q1 What is critical radius of insulation ?Derive expression for critical radius

for a spherical system (Nov9)

CO4,CO5

Q2 Derive general differential equation of conduction in Cartesian Co-

ordinates (May10

CO4,CO5

Q3 Derive an expression for steady state temperature distribution along the

radius of solid cylinder with generating heat with convective boundary

CO4,CO5

condition (May10)

Q4 Derive expression for critical radius for a cylinder (May10) CO4,CO5

Q5 Derive steady state conduction equation for i)Plane wall ii)Hollow

cylinder (Nov10)

CO4,CO5

Q6 Derive an expression heat conduction through hallow cylinder for one

dimensional steady state and no heat generation condition (May11)

CO4,CO5

Q7 Explain Fin efficiency and Fin effectiveness(Nov9) CO2

Q8 How the error in temperature measurement is obtained ?Explain it

(Nov10)

CO2

Q9 Derive expression for temperature distribution and heat transfer rate of a

Fin with insulated tip (Nov10)

CO2

Q10 Derive an expression for heat flow through finite long fin with

convection heat loss from its fin tip(May11)

CO2

Q11 A steam at 300°C is passing through a steel tube A thermometer pocket

of steel(K=45W/m°K) of inside diameter of 14mm and 1mm thick is

used to measure the temperature .Calculate the length of thermometer

pocket needed to measure the temperature within 1.8% possible error The

diameter of steel tube is 95mm The heat transfer coefficient is 93

W/m2°K and tube wall temperature is 100°C (May11)

CO2

Q12 Explain unsteady state heat conduction from a body of infinite thermal

conductivity (Nov9)

CO14

Unit

No

3 Unit Title Radiation Planned

Hrs.

8

Unit Outcomes


UO1 Indentify the terms and basic concepts of radiation CO13,CO1

1,CO3

UO2 Determine the Fundamental laws of radiation CO3,CO13

UO3 Explain radiation between two black surfaces CO11

UO4 Define shape factor and laws of shape factor CO11,CO3

UO5 Understand the concept of Electrical analogy CO11,CO3

,CO13

UO6 Understand radiation between two gray surfaces CO12,CO1

3

UO7 Understand Radiation shields CO13

Lesson schedule

Class

No.


1 Nature of thermal radiation, definitions of absorbitivity, reflectivity, transmissivity,

monochromatic emissive power. Total emissive power and emissivity, Concept of

black body & gray body

2 Kirchoff‟s law, Wein‟s law and Planck‟s law

3 Deduction of Stefan Boltzman equation. Lambert cosine rule, Intensity of radiation.

4 Energy exchange by radiation between two black surfaces with non-absorbing medium

in between and in absence of reradiating surfaces.

5 Energy exchange by radiation between two gray surfaces without absorbing medium

and absence of reradiation and Radiosity.

6 Radiation network method

7 Network for two surfaces which see each other and nothing else.

8 Geometric shape factor.

Review Questions

Q1 State Planks law and Wein‟s law .Hence derive wein‟s law from planks

law (8) (Nov9)

CO3,CO13

Q2 A spherical liquid oxygen tank 0.3m in diameter is enclosed

concentrically in a spherical container of 0.4m diameter and space

between is evaluated The tank surface is at -183°C and emissivity 0.2 the

container surface is at 15°C and has an emissivity 0.25Determine the net

radiant heat transfer rate and rate of evaporation of liquid oxygen in its

latent heat is 220KJ/Kg (Nov9)

CO3,CO13

Q3 Write short notes on radiation shield (Nov9)(Nov10) CO13

Q4 State Planks law and derive Stefan Boltzmann law from planks law

(May10)

CO3

Q5 Two parallel infinite gray surfaces are maintained at temperature 127°C

and 227 °C respectively If temperature of hot surface is increased to 327

°C By what factor is the net radiation exchange per unit area increased

?Assume emissivity‟s of colder and hotter surface to be0.9and

0.7respectively (May10)

CO12,CO1

3

Q6 State and prove Kirchhoff‟s law (May10) CO3

Q7 Explain the following

i)Planks law

ii)Stefan Boltzmann law

iii) Monochromatic emissive power

IV) Intensity of radiation (Nov10)

CO3

Q8 Two very large parallel plates with emissivity‟s 0.3 and 0.8 exchange

irradiative energy Determine percentage reduction in irradiative energy

transfer when a polished aluminum shield (ϵ =0.04) is placed between

them (Nov10)

CO13

Q9 Define Lambert cosine law and Kirchhoff‟s law of thermal radiation

.Show that total emissivity of a surface is equal to total absorptivity at

same temperature (May11)

CO3

Q10 It is observed that intensity of radiation is maximum in case of solar

radiation at a wavelength of 0.49microns .Assuming Sun as black body,

estimate its surface temperature and emissive power (May11)

CO11

Q11 Experimental procedure to determine Stefan-Boltzmann constant

(May11)

CO3

Unit No 4 Unit Title Convection Plan

ned

Hrs.

9

Unit Outcomes


UO1 Describe concept of velocity boundary layer CO6

UO2 Evaluate Physical significance of dimensionless numbers for natural and

forced convection

CO3

UO3 Understand Combined free and forced convection problems CO6

UO4 Define Reynolds analogy for laminar flow CO7,CO3

UO5 Understand Dimensional analysis CO7,CO8

UO6 Obtain Numerical correlations to solve natural and forced convection

problems

CO7,CO8

Lesson schedule

Class

No.


1 Concept of Hydrodynamic and thermal boundary layer, local and average convective

coefficient for laminar and turbulent for flat plate and pipe.

2 Dimensional analysis, Physical significance of dimensionless numbers

3 Reynolds analogy for laminar flow

4 Numerical correlations to solve various problems

5 Flow over Tube bundles.

6 Dimensional analysis

7 Physical significance of dimensionless numbers

8 Numerical correlations to solve natural convection problems

9 Combined free and forced convection problems

Review Questions

Q1 Describe flow over flat plate with its parameters What is effect of fluid

density over boundary layer thickness?(Nov9)

CO6

Q2 Discuss briefly the effect of turbulence on boundary layers(4) (May 10) CO6

Q3 Write Short note on Thermal boundary layer (May11) CO6

Q4 Explain the analysis the problem of forced convention with the help of

dimension analysis(May11)

CO8

Q5 Give the physical significance of Nussult‟snumber,Prandtl‟s number and CO7,CO8

Grashof number (May11)

Q6 A two stroke motor cycle petrol engine cylinder consists of 15 annular

fins If outside and inside diameters of each fin are 200mm & 100mm

respectively The average fin surface temperature is 475°C & they are

exposed to air at 25°C Calculate heat transfer rate when motor cycle is at

rest The thermo physical properties of air at 250°C are k=0.0427

W/m°KPr=0.677 v=40.61*10-6

m2/s use following correlation

Nu=0.54(Gr.Pr)0.25

(May11)

CO7

Q7 Describe Hydraulic diameter .Describe the criterion for transition from

laminar to turbulent flow (Nov 10)

CO6,CO8

Q8 What is Ditttus –Boelter Equation ?Where and when does it apply(4)

(May 10)

CO8

Q9 Air at 20°C and 1 bar flows over a flat plate at 25m/s which is maintained

at 60°C the plate is 90cm*70cm the flow is along 70cm side Take the

following properties of air at temperature of 40°C Ρ=1.13Kg/m3

K=0.02723W/m°K,Cp=1.007KJ/Kg°K,Pr=0.7,dynamic viscosity =20*10

CO8

Unit No 5 Unit Title Boiling and condensation Plan

ned

Hrs.

02

Unit Outcomes


UO1 Explain Forced boiling CO6,CO2

UO2 Understand condensation and boiling CO6, CO2

Lesson schedule

Class

No.


1 Pool boiling curves, Forced boiling, Techniques for enhancement of boiling

2 Nusselt‟s theory of condensation, Condensation number, Filmwise and dropwise

condensation.

Review Questions

Q1 Write Short note on Regimes of pool boiling curve (May11) CO6,

CO2

Q2 Explain comparison between drop wise and film wise condensation

(May11)(Nov10)

CO6,

CO2

Q3 Distinguish between

i) Sub cooled and saturated boiling

ii) Pool Boiling and forced convection boiling (May11)

CO6,

CO2

Q4 Write Short note on Nucleating boiling (Nov 10) CO6,

CO2

Unit

No

6 Unit Title Heat Exchangers Planned

Hrs.

6

Unit Outcomes


UO1 Provides the analysis of various heat transfer equipment such as Heat

Exchanger

CO9,CO

10

UO2 Understand Principle ,working and Types of Heat exchangers CO9

UO3 Explain Design consideration for Heat exchangers CO9,CO

10

UO4 Explain Heat pipe and its applications CO2

UO5 Understand Fouling factor, Overall heat transfer coefficient CO10

Lesson schedule

Class

No.


1 Classification & Types of Heat exchangers

2 Fouling factor, Overall heat transfer coefficient,

3 Analysis by LMTD and NTU method for parallel and counter flow

4 Design consideration for Heat exchangers.

5 Problems

6 Heat pipe.

Review Questions

Q1 Write a Short note on

i)Classification of Heat Exchangers with neat sketch (M11)

CO9

Q2 Explain the working of heat pipe with the help of neat sketch. Why is

a wick needed in heat pipe? (M11)

CO2

Q3 What do you mean by fouling factor? State the causes of fouling ?

(M11)

CO10

Q4 A Heat Exchanger is required to cool 55000kg/Hr of alcohol from

66°C to 40°C using 40,000kg/hr of water entering at 5 °C Calculate:

I)Exit Temperature of water

ii)Heat Transfer Rate

iii) Surface area required for parallel and Counter flow type of heat

exchanger

Take Cp(alcohol)=3760 J/kg °K,Cp(Water)=4180 J/kg

°K,U=580W/m2°K(8)(M11)

CO9,CO

10

Q5 Write a Short note on

I) Effectiveness –NTU method of heat exchanger Design(Nov 10)

CO10

Q5 Write Short note on.Nussult‟s theory of film wise condensation (May 10) CO6,

CO2

Q6 Counter flow Heat Exchanger is more effective than parallel flow

heat exchanger. Comment (Nov 10)

CO9,CO

10

Unit

No

7 Unit Title Mass Transfer Planned

Hrs.

02

Unit Outcomes


UO1 Understand Fick‟s law of diffusion, CO15

UO2 Compare between heat and mass Transfer CO15

Lesson schedule

Class

No.


1 Introduction, Modes of mass transfer, Analogy between heat and mass transfer,

Mass

diffusion (Mass basis, Mole basis)

2 Fick‟s law of diffusion, Significance of various dimensions

numbers.

Review Questions

Q1 1. Write short notes on

i) Flicks law of diffusion (Nov9) (Nov10)

CO15

Q2 Write short notes on

Mechanisms of mass transfer (May10)

CO15

Q3 Write short notes on

Modes of Mass transfer with suitable examples (May11)

CO15


Course Title : Heat and Mass Transfer

Duration- 3

hours

Max.

Mar

ks

Instructions:1)Answer any Three questions from each section

2) Draw neat sketches whenever necessary

3)Assume suitable data if necessary and state them clearly

4)Use of Calculator is allowed

Section-I

Mar

ks

1 a Define thermal conductivity and explain how it varies with temperature 8

b What is critical radius of insulation ?Derive expression for critical radius for

a spherical system

8

2 a State Planks law and derive Stefan Boltzmann law from planks law 8

b Two parallel infinite gray surfaces are maintained at temperature 127°C and

227 °C respectively If temperature of hot surface is increased to 327 °C By

what factor is the net radiation exchange per unit area increased ?Assume

emissivity‟s of colder and hotter surface to be0.9and 0.7respectively

8

3 a Derive expression for temperature distribution and heat transfer rate of a Fin

with insulated tip

8

b A steam at 300°C is passing through a steel tube A thermometer pocket of

steel(K=45W/m°K) of inside diameter of 14mm and 1mm thick is used to

measure the temperature .Calculate the length of thermometer pocket needed

to measure the temperature within 1.8% possible error The diameter of steel

tube is 95mm The heat transfer coefficient is 93 W/m2°K and tube wall

temperature is 100°C

8

4 Write Short notes on any three

i) Fin efficiency and Fin effectiveness

ii)Laws of radiation

iii) unsteady state heat conduction

iv)Modes of heat transfer

18

Section-II

Mar

ks

5 a Describe flow over flat plate with its parameters What is effect of fluid

density over boundary layer thickness

8

b Give the physical significance of Nussult‟s number,Prandtl‟s number and

Grashof number 8

6 a Explain the analysis the problem of forced convention with the help of

dimension analysis

8

b A two stroke motor cycle petrol engine cylinder consists of 15 annular fins

If outside and inside diameters of each fin are 200mm & 100mm

respectively The average fin surface temperature is 475°C & they are

exposed to air at 25°C Calculate heat transfer rate when motor cycle is at

8

rest The thermo physical properties of air at 250°C are k=0.0427

W/m°KPr=0.677 v=40.61*10-6

m2/s use following correlation

Nu=0.54(Gr.Pr)0.25

7 a Distinguish between

i) Sub cooled and saturated boiling

ii) Pool Boiling and forced convection boiling

8

b A Heat Exchanger is required to cool 55000kg/Hr of alcohol from 66°C to

40°C using 40,000kg/hr of water entering at 5 °C Calculate:

I)Exit Temperature of water

ii)Heat Transfer Rate

iii) Surface area required for parallel and Counter flow type of heat

exchanger

Take Cp(alcohol)=3760 J/kg °K,Cp(Water)=4180 J/kg °K,U=580W/m2°K

8

8 Write Short notes on any three

i) Flicks law of diffusion

ii) Effectiveness –NTU method of heat exchanger Design

iii) Classification of Heat Exchangers with neat sketch

iv) comparison between drop wise and film wise condensation

18

Assignments


Assignment No. 1

Assignment Title computer program in C language CO1

Batch I To Determine thermal conductivity of insulating powder

Batch II To Determine Stefan Boltzmann Constant.

Batch III To Determine thermal conductivity of Composite wall or lagged pipe.

Batch IV To Determine Heat Transfer Coefficient for forced convection

Assignment No. 2

Assignment Title computer program in C language CO2

Batch I To Determine of Stefan Boltzmann Constant.

Batch II To Determine thermal conductivity of Composite wall or lagged pipe.

Batch III To Determine Heat Transfer Coefficient for natural convection.

Batch IV To Determine thermal conductivity of Metals at different temperatures

List of additional assignments /experiments

Assignment No. 1

Assignment Title Nano Fluids CO

Batch I Types of Nanofluids

Batch II Preparation of Nanofluids

Batch III Heat transfer enhancement using Nanofluids

Batch IV Applications of Nanofluid

List of open ended experiments/assignments

Assignment No. 1

Assignment Title CO

Batch I

Batch II

Batch III

Batch IV

Course Plan

Course MACHINE DESIGN-I Course Code 45551

Examination

Scheme


Max. Marks 100 25 -- 125

Contact

Hours/ week

3 2 -- 5

Prepared by S. V. Dhanal Date

Prerequisites Fundamental equations: Tensile stress, Bending Stress, Shearing stress

Elastic theories of failure, types of loads

Course Outcomes


CO1 Explain general design procedure of designing a machine element, factor of

safety- its selection & selection of various engineering materials

CO2 Design and draw of machine elements against static loading, knuckle joint,

Turn buckle, Levers

CO3 Design welded & bolted joints subjected to transverse and eccentric loads.

Bolted joint.

CO4 Design solid & hollow shafts, transmission & line shafts, splined shafts,

Keys and Couplings

CO5 Explain various types of springs and their applications, and design Helical,

Compression & Tension springs subjected to static loading. Stresses induced

in helical springs

CO6 Explain forms of threads, and design power screw & nuts

CO7 Derive fundamental equation of motion, torque analysis, Stresses in flywheel

rim & spokes and design solid and rimmed flywheels

CO8 To do selection of flat belt, V belt and rope drives as per manufacturer‟s

catalogue.


POs

COs

a b c d E F G H i j k l

CO1

CO2 √

CO3 √

CO4 √

CO5 √

CO6 √

C07 √

CO8 √

Course Contents


Hours

Section I

1. Concept of Machine design, Types of loads, Factor of safety- its

selection & significance, Theories of elastic failure & their

applications, General design procedure, Review & selection of

various engineering materials properties & I.S. coding of various

materials, Factors governing selection of Engineering materials.

(05)

2. Design of machine elements against static loading, knuckle joint,

Turn buckle, Levers etc.

(04)

3. Design of welded & bolted joints subjected to transverse and

eccentric loads. Bolted joint subjected following conditions – i)

Bolted joints in shear ii) Bolted joints subjected to load perpendicular

to the axis of bolt iii) Bolted joints subjected to eccentric load on

circular base.

(04)

4. Design of solid & hollow shafts, transmission & line shafts, splined

shafts, Types of Couplings, Design of Muff, Rigid flange & Flexible

bushed pin type flanged coupling, Design of keys & splines.

(07)

SECTION II

5 Design of Springs :

Various types of springs and their applications, Design of Helical,

Compression & Tension

springs subjected to static loading. Stresses induced in helical

springs.

(05)

6 Design of Power Screw :

Forms of threads, Design of power screw & nuts, Types of induced

stresses efficiency of

power screw, self locking and overhauling properties, Introduction to

recirculating bal screw.

(06)

7 Design of flywheel & pulley :

Fundamental equation of motion, Torque analysis, Stresses in

flywheel rim & spokes. Design of solid & rimmed flywheels. Design

of pulley – Flat & V belt pulley.

(05)

8 Selection of flat belt, V belt and rope drives as per the standard

manufacturer‟s catalogue. Introduction to timing belts.

(04)

Reference Books:

Sr. No. Title of Book Author Publisher/Edition Units

1 Design of Machine Elements V.B.Bhandari Tata McGraw

Hill

1to8

2 Machine Design R.K. Jain Khanna 1 to7

3 Machine Design Pandya Shah, Charotar 1 to 7

4 Design of Machine Element J.F. Shigley Tata McGraw

Hill

1 to7

5 Design of Machine Elements P. Kannaiah Scitech

Publication

1 to7

6 PSG Design data Book 1 to 8

Scheme of Marks


I 1 Concept of Machine Design 18

2 Design against static loading 16

3 Design of welded & bolted joints 16

4 Design of Shafts, keys & couplings 16

II 5 Design of Springs 16

6 Design of power screw 16

7 Design of flywheel and pulleys 18

8 Selection of belts & rope drives 16

Course Unitization

Section

Unit Course

Outcomes

No. of Questions in


I 1,2 Concept of Machine

Design, Design against

static loading

CO1, CO2 Q1, Q2

4 Design of Shafts, keys &

couplings

CO3 Q3

II 5,6 Design of springs, power

screw

CO5,CO6 Q1, Q2

8 Selection of belts & rope

drives

CO8 Q3


Section I

Unit No 1 Unit Title Concept of Machine Design Planne

d Hrs.

05

Unit Outcomes


UO1 Explain general design procedure for a machine element CO1

UO2 factor of safety, to select engg. material for a machine element, I S coding CO1

Lesson schedule

Class

No.


1 Types of loads, Factor of safety, Theories of elastic failure & their applications,

2 General design procedure for a machine element

3 Selection of various engineering materials properties

4 I.S. coding of various materials,

5 Factors governing selection of Engineering materials.

Review Questions

Q1 Explain general design procedure for a machine element CO1

Q2 Define factor of safety & explain factor affecting selection of f.o.s. CO1

Q3 Explain factors governing, selection of engineering materials for designing

a machine element

CO1

Unit No 2 Unit Title Design against static loading Planne

d Hrs.

04

Unit Outcomes


UO1 Explain design procedure of Knuckle joints, turn buckle CO2

UO2 Indentify type of lever, design levers CO2

Lesson schedule

Class

No.


1 Design procedure of Knuckle joint.

2 Design of knuckle joints

3 Design procedure for turn buckle with neat sketch

4 Types of levers with examples, design of levers

Review Questions

Q1 Explain in detail design procedure of Knuckle joint. CO2

Q2 Explain types of levers with examples CO2

Q3 Design a Knuckle Joint to transmit 150 KN load. The design stresses may

be taken as 75 MPa in tension 60 MPa in shear & 150 MPa in compression

CO2

Q4 Explain design procedure for Turn Buckle with neat sketch CO2

Unit No 3 Unit Title Design of welded joints & bolted joints Planne

d Hrs.

04

Unit Outcomes


UO1 To determine size of welds CO3

UO2 To design bolted joints subjected eccentric loads CO3

UO3 To explain eccentric load acting in the plane of bolts and perpendicular to

the axis of bolt

CO3

Lesson schedule

Class

No.


1 Design of welded joints subjected to transverse and eccentric loads.

2 Design of bolted joints subjected eccentric loads

3 Bolted joints subjected to load perpendicular to the axis of bolt

4 Bolted joints subjected to eccentric load on circular base

Review Questions

Q1 Explain eccentric load acting in the plane of bolts CO3

Q2 explain eccentric load acting in the plane of bolts CO3

Q3 A bracket carrying a load of 15 KN is to be welded as shown in fig. Find

the size of weld, if permissible shear stress for the weld is 80N/mm2.

Assume static condition.

CO3

Q4 Write the advantages of welded joint over bolted joint CO3

Unit No 4 Unit Title Design of shaft, keys & couplings Planne

d Hrs.

07

Unit Outcomes


UO1 To design shafts on strength & rigidity basis CO4

UO2 To design different types of couplings CO4

UO3 To explain different types of keys & to design CO4

Lesson schedule

Class

No.


1 Design of solid shafts

2 Transmission & line shafts, splined shafts

3 Types of Couplings, Design Procedure of Muff,

4 Rigid flange coupling

5 Flexible bushed pin type flanged coupling,

6 Design of keys & splines.

7 Design of hollow shafts

Review Questions

Q1 A shaft made of mild steel is required to transmit 100 KW at 300 r.p.m.

The supported length of the shaft is 3 metres. It carries two pulleys each

weighing 1500 N supported at a distance of 1 metre from the ends

respectively. Assuming the safe value of stress as 60 MPa, determine the

diameter of the shaft.

CO4

Q2 Explain design procedure of rigid flange coupling CO4

Q3 A steel spindle transmits 4 kW at 800 r.p.m. The angular deflection should

not exceed 0.25° per metre of the spindle. If the modulus of rigidity for the

material of the spindle is 84 GPa, find the diameter of the spindle and the

shear stress induced in the spindle.

CO4

Q4 Explain different types of keys with neat sketches CO4

Section II

Unit No 5 Unit Title Design of Springs Planne

d Hrs.

05

Unit Outcomes


UO1 To explain types of springs and their applications CO5

UO2 To design helical compression and tension springs CO5

Lesson schedule

Class

No.


1 Various types of springs and their applications

2 Design of Helical compression spring

3 Design of Helical compression spring, different end styles

4 Design of Helical tension spring

5 Stresses induced in helical springs

Review Questions

Q1 A compression coil spring made of an alloy steel is having the following

specifications: Mean diameter of coil = 50 mm ; Wire diameter = 5 mm ;

Number of active coils = 20. If this spring is subjected to an axial load of

500 N ; calculate the maximum shear stress (neglect the curvature effect)

to which the spring material is subjected.

CO5

Q2 A helical spring is made from a wire of 6 mm diameter and has outside

diameter of 75 mm. If the permissible shear stress is 350 MPa and modulus

of rigidity 84 kN/mm2,

find the axial load which the spring can carry and

the deflection per active turn.

CO5

Unit No 6 Unit Title Design of Power screws Planne

d Hrs.

05

Unit Outcomes


UO1 To explain forms of threads CO6

UO1 To design of power screw & nuts CO6

Lesson schedule

Class

No.


1 Forms of threads, terminology

2 Design of power screw & nuts, to explain self locking and overhauling properties

3 Design of power screw & nuts

4 self locking and overhauling properties

5 Introduction to recirculating ball screw

Review Questions

Q1 Explain different forms of threads with relative advantages & disadvanages CO6

Q2 A square threaded screw exerts a load of 30 KN, with outer diameter of

threads as 75mm and pitch of 6mm. the height of nut is 150mm. Find i)

force req. at the end of rim of 300mm diameter wheel with coeff of friction

0.12 ii) max. compressive stress in screw, bearing pressure on threads &

shear stress in the threads. Iii) efficiency of the screw.

CO6

Unit No 7 Unit Title Design of flywheel & pulley Planne

d Hrs.

05

Unit Outcomes


UO1 To derive fundamental equation of motion, Coefficient of Fluctuation of

Energy

CO7

UO2 torque analysis, Stresses in flywheel rim & spokes CO7

UO3 To design flywheel & pulley CO7

Lesson schedule

Class

No.


1 Fundamental equation of motion, Coefficient of Fluctuation of Energy

2 Torque analysis, Stresses in flywheel rim & spokes

3 Design of solid & rimmed flywheels

4 Design of pulley

5 Flat & V belt pulley

Review Questions

Q1 Explain Coefficient of Fluctuation of Energy of flywheel CO7

Q2 Explain stresses in a Flywheel Rim CO7

Unit No 8 Unit Title Selection of flat belt, V belt and rope drives Planne

d Hrs.

04

Unit Outcomes


UO1 to select flat belt from as per the standard manufacturer‟s catalogue CO8

UO1 to select V belt and rope drives from as per the standard manufacturer‟s

catalogue

CO8

Lesson schedule

Class

No.


1 Selection of flat belt as per the standard manufacturer‟s catalogue

2 V belt as per the standard manufacturer‟s catalogue

3 Rope drives as per the standard manufacturer‟s catalogue

4 Introduction to timing belts

Review Questions

Q1 Explain step by step procedure to select flat belt from as per the standard

manufacturer‟s catalogue

CO8

Q2 Explain step by step procedure to select V belt and rope drives from as per

the standard manufacturer‟s catalogue

CO8


Course Title : Machine Design-I

Duration

3 hrs

Max.

Marks

100

Instructions:

Solve any three questions from each section.

Assume any data if necessary and state it clearly

Section-I

Marks

1 A Define factor of safety. What is its significance in the machine design. 06

B Suggest suitable material for following and give reasons for your selection.1. Flange

for coupling 2. Cylinder block of ICE 3. Pistons 4 Connecting rod

06

C Explain step by step general design procedure 06

2 A Explain design procedure for turn buckle 06

B Design a Knuckle Joint to transmit 150 KN load. The design stresses

may be taken as 75 MPa in tension 60 MPa in shear & 150 MPa in

compression.

10

3 A Explain eccentric load acting perpendicular to the axis of bolts

06

B A 50mm diameter solid shaft is welded to a flat plate as shown in fig. if

the size of the weld is 15mm, find the maximum normal and shear stress

in the weld.

6

4 10

a Explain the procedure to design muff coupling with neat sketch

b Design a rigid type flange coupling to connect two shafts. The input shaft

transmits 37.5 kW power at 180 rpm to the output shaft through the

coupling. The shaft material is 40C8 having Syt=380N/mm2. The keys

and bolts are made of 30C8 having Syt= 400N/mm2. It is assumed that

compressive strength is 150% of tensile strength. The factor of safety for

keys & bolts is 2.5. The flanges are made of gray C.I. having

Sut=200N/mm2 with factor of safety as 6.

5 a Derive expression for torque required to raise load by power screws 6

b A triple start thresded screw is used to raise a load of 50 KN. The screw

has a nominal dia. of 50mm & pitch of 8mm, height of nut is 40mm and

coeff of friction between nut and screw is 0.12. there is no collar friction.

Find the max shear stress induced in the screw & nut threads. Also find

the bearing pressure between screw & nut.

10

6 a Explain various en styles of compression helical springs with sketches 6

b Design a compression helical spring to carry a load of 500 N with a

deflection of 25 mm. The spring index may be taken as 8. Assume the

following values for the spring material: Permissible shear stress = 350

MPa, Modulus of rigidity = 84 kN/mm2

Wahl‟s factor = K = 4C-1/4C-4 +0.615/C where C = spring index.

10

7 a Explain coefficient of fluctuation of energy 8

b The torque developed by an engine is: T= 14250+2200sin2θ-1800cos2θ.

The resisting torque of the machine is constant. The coefficient of speed

fluctuation is 0.01. Engine speed 150 rpm. A solid circular steel disk, 50

mm thick is used as flywheel. The mass density of steel is 7800 kg/m3.

Calculate radius of flywheel disk.

10

8 a Explain step by step procedure to select flat belt from as per the standard

manufacturer‟s catalogue

6

b It is equired to select V belt drive to connect 20 kw, 1440 rpm motor to a

compressor running at 480 rpm for 15 hrs per day. Space available for

center dist is apprx. 1.2m. determine the specifications of belt.

10


1 General design procedure and Selection of materials for various

engineering applications showing their IS codes, composition and

properties

CO1

2 Problems on knuckle joint and levers CO2

3 One problem each on bolted and welded joints subjected to eccentric

loading

CO3

4 Problems on springs CO5

5 Problema on flywheel and rims CO7

6 Selection of belts CO8

7

Design , Drawing of the following. (Any Two)

1. Knuckle joint or turn buckle.

2. Rigid or flexible flange coupling.

3. Application of power screw.

CO2, CO4, CO6

A detail report of design procedure calculation and sketches should be

submitted along with A 2 size drawing Sheet containing details &

assembly.

All the assignments should be solved by using standard design procedure

using design data book such as PSG design Data book

Course Plan

Course MQC Course Code 45564

Examination

Scheme


Max. Marks 100 25 25 150

Contact

Hours/ week

3 2 -- 5

Prepared by Mr. Gavali P.B./Mr. P.M.Patil Date

Prerequisites Basic knowledge of scale, scale factor and different measurement with units.

Also knowledge of limit , fits and tolerances.

Course Outcomes


CO1 Describe various instruments and their characteristics.

CO2 Apply knowledge of instruments to use and interpret the data.

CO3 Solve the problems on angle measurements.

CO4 Apply knowledge for solving problems on limits, fits and tolerances.

CO5 Explain the types of control chart to use, depending on given data.

CO6 Solve problems based on quality control and acceptance sampling.


POs COs


CO1 √

CO2 √ √ √

CO3 √

CO4 √

CO5 √

CO6 √

Course Contents


Hours

Section I

1. Measurements: International standards of length-Line and end

measurement, Need of measurement, possible errors in measurement,

slip gauges.

3

2. Tolerances and gauging Unilateral and bilateral tolerances, Limits,

Fits, Types of Fits, IS Specifications of limits. Importance of limits,

System in mass production, limits gauges used for plain and taper

works.

4

3 Magnification : Principles and characteristics of measuring

instruments, Mechanical, Optical, electrical, Pneumatic method of

magnification, different types of Verniers, Micrometers, Dial gauges,

Mechanical and pneumatic, Types of comparators. Use of

comparators in inspection.

4

4 Measurement of angles, tapers and radius : Bevel Protractor,

Spirit level, Clinometers, angle Decker, standard balls and rollers for

angle measurement, angle slip gauges, radius measurement of

circular portion, measurement of concave and convex surface radius.

4

5 Interferometry: Principle of Interferometry and application in

checking of flatness, angle and height. 3

6 Straightness and Flatness : Straight edge, use of level beam

comparator, autocollimator testing of flatness of surface

plate(Theoretical treatment only)

2

Section II

7 Surface finish: Types of textures obtained during machine operation,

range of C.L.A. value in different operations in numerical assessment

of surface finish (B.I.S. Specifications of C.L.A. value)-sample

length of different machining operations. Direction of lay, texture,

symbols, instruments used in surface finish assessment

3

8 Measurement of External Threads: Different errors in screw

threads, measurement of forms of thread with profile projector, pitch

measurement, measurement of thread diameter with standard wire,

screw thread micrometer

4

9 Measurement of Spur Gears: Run out checking, Pitch

measurement, profile checking, backlash checking, tooth thickness

measurement, alignment checking, errors in gears, checking of

composite errors.

4

10 Quality control: Concept of Quality and quality control, elements of

quality & its growth, purpose, setup, policy & objective, factors

controlling & quality of design and conformance, balance between

cost and quality and value of quality. Specification of quality,

planning through trial lots and for essential information

3

11 Statistical Quality Control: Importance of statistical method in

quality control, measuring of statistical control variables and

attributes. Measurement/inspection, different types of control charts

(X Bars, R, P. charts) and their constructions and their application.

4

12 Acceptance Sampling: Sampling inspection & percentage 3

inspection, basic concept of sampling inspection, operating

characteristic curves, conflicting interests of consumer and producer,

producer and consumers risks, AWQL, LTPD, ADGL, single and

double sampling plans.

Reference Books:

Sr. No. Title of Book Author Publisher/Edition Topics

1 Metrology M. Mahajan Dhanpat Rai

Publications

1-12

2 Statistical Quality control M. Mahajan Dhanpat Rai

Publications

10-12

3 Engg. Metrology I.C. Gupta Dhanpat Rai

Publications.

1 & 3

4 Engg. Metrology R.K.Jain Khanna

Publisher

1-9

5 Statistical Quality control R.C. Gupta Dhanpat Rai

Publications.

10-12

Scheme of Marks


I

1 Measurements 12

2 Tolerances and gauging 22

3 Magnification 16

4 Measurement of angles, tapers and radius 14

5 Interferometry 4

6 Straightness and Flatness 18

II

7 Surface finish 8

8 Measurement of External Threads 6

9 Measurement of Spur Gears 8

10 Quality control 12

11 Statistical Quality Control 14

12 Acceptance Sampling 18

Course Unitization

Section

Unit Course

Outcomes

No. of Questions in


I 1 Measurements Q 1,Q 2 &

Q 3 All

questions are

compulsory

2 Tolerances and gauging

3&4 Magnification &

Measurement of angles,

tapers and radius

II 10 Quality control Q 1,Q 2 & Q

3 All

questions are

compulsory

11 Statistical Quality

control

12 Acceptance Sampling


Section I

Unit

No

1 Unit Title Measurements Planned

Hrs.

03

Unit Outcomes: should understand various instruments and their characteristics.


UO1 CO1

Lesson schedule

Class

No.


1 International standards of length-Line and end measurement

2 Need of measurement, possible errors in measurement

3 slip gauges

Review Questions

Q1 Define Metrology. What are the linear measuring instruments used

in Metrology.

CO1

Q2 Write a note on “wringing of slip gauges” CO1

Q3 Difference between Line standards and End standard. CO1

Q4 Write a note on “Slip gauge” CO1

Unit

No

2 Unit Title Tolerances and gauging Planned

Hrs.

04

Unit Outcomes : Apply knowledge for solving problems on limits, fits and tolerances


UO2 Tolerances and gauging CO4

Lesson schedule

Class

No.


1 Unilateral and bilateral tolerances

2 Limits, Fits, Types of

Fits, IS specifications of limits

3 Importance of limits, System in mass production

4 limit gauges used for plain and taper works, Industrial applications

Review Questions

Q1 Define Hole base system and Shaft base System. Which system is

widely used? Why?

CO 4

Q2 Explain the Taylor‟s principal of Gauge Design. CO 4

Q3 Difference between Measuring instruments and limit gauges. CO 4

Q4 What are the different types of limits and fits. Explain? CO 4

Q5 What types of fits will be confirmed for following pairs as whole

basis system? I) H8f8 II)H8p7

CO 4

Unit

No

3 Unit Title Magnification Planned

Hrs.

04

Unit Outcomes: Describe various instruments and their characteristics. And aply knowledge of

instruments to use and interpret the data.


UO3 Magnification CO1

CO2

Lesson schedule

Class

No.


1 Magnification Principles and characteristics of measuring instruments

2 Mechanical, Optical, electrical, Pneumatic method of magnification

3 different types of Verniers, Micrometers, Dial gauges, Mechanical and

pneumatic

4 Types of comparators. Use of

comparators in inspection

Review Questions

Q1 .Explain in brief different methods of magnification system. CO1 &

CO2

Q2 Explain the mechanical type of comparator. CO1 &

CO2

Q3 Explain in brief optical, mechanical and pneumatic methods of

magnification.

CO1 &

CO2

Q4 What s magnification? Explain Dail gauges as a mechanical

comparator.

CO1 &

CO2

Unit

No

4 Unit Title Measurement of angles, tapers and

radius

Planned

Hrs.

04

Unit Outcomes: Solve the problems on angle measurements.& And aply knowledge of

instruments to use and interpret the data.


UO4 CO3

Lesson schedule

Class

No.


1 Bevel Protractor, Spirit level, Clinometers

2 angle Decker, standard balls and rollers for angle measurement, angleslip gauges

3 radius measurement of circular portion, measurement of concave and convex

surface radius

4 Advanced electronic systems for angle measurement

Review Questions

Q1 Explain with neat sketch principle ,construction and working of

clinometers.

CO 3

Q2 Describe with neat sketch concave surface radius. CO 3

Q3 Explain with neat sketch convex surface radius. CO 3

Q4 Write a note on Sources of errors in the measurement CO 3

Unit

No

5 Unit Title Interferometry Planned

Hrs.

03

Unit Outcomes: Apply knowledge of instruments to use and interpret the data.


UO3 CO2

Lesson schedule

Class

No.


1 Principle of Interferometry

2 application in checking of flatness

3

application in checking angle and height

Review Questions

Q1 Explain the use of interferometry for calibration of slip gauge. CO2

Q2 Sate the principle of interferometry ans explains its use in hecking

flatness of a surface.

CO2

Q3 What are the different applications of interferometry technique? CO2

Q4 What are the necessary condition for interference of light waves CO2

Unit

No

6 Unit Title Straightness and Flatness: Planned

Hrs.

02

Unit Outcomes: Apply knowledge of instruments to use and interpret the data.


UO6 CO2

Lesson schedule

Class

No.


1 Straight edge, use of level beam comparator, autocollimator

2 testing of flatness of surface plate(Theoretical treatment only)

Review Questions

Q1 Define Straightness and Flatness. CO2

Q2 Explain briefly how Straightness and Flatness is measured and

specified.

CO2

Q3 Write a note on Optical flat. CO2

Q4 Explain Level beam comparator.

Section II

Unit

No

7 Unit Title Surface finish Planned

Hrs.

03

Unit Outcomes: should understand various instruments and their characteristics.

. And apply knowledge of instruments to use and interpret the data.


UO7 CO1

Lesson schedule

Class

No.


1 Types of textures obtained during machine operation, range of C.L.A. value

2 different operations in numerical assessment of surface finish

3 (B.I.S.Specifications of C.L.A. value)-sample length of different machining

operations

Direction of lay, texture, symbols , instruments used in surface finish assessment

Review Questions

Q1 Write a note on CLA method for measurement of surface roughness. CO1

Q2 Sketch different types of texture and direction of lay obtained during

machining operations.

CO1

Q3 Explain working principle of any one instrument used in surface

finish measurement.

CO1

Q4 State the range of CLA values for different machining and finishing

operation.

CO1

Unit

No

8 Unit Title Measurement of External Threads: Planned

Hrs.

04

Unit Outcomes: Describe various instruments and their characteristics. And aply knowledge of

instruments to use and interpret the data


UO8 CO1 &

CO2

Lesson schedule

Class

No.


1 Different errors in screw threads

2 measurement of forms of thread with profile projector pitch measurement,

3 measurement of

thread diameter with standard wire

4 screw thread micrometer

Review Questions

Q1 What is single wire and double wire method. CO1 &

CO2

Q2 Write a note on Different Errors in screw threads. CO1 &

CO2

Q3 Explain with neat sketch screw thread micrometer. CO1 &

CO2

Unit

No

9 Unit Title Measurement of Spur Gears: Planned

Hrs.

04

Unit Outcomes: And apply knowledge of instruments to use and interpret the data


UO9 CO2

Lesson schedule

Class

No.


1 Run out checking, alignment checking

2 Profile checking, backlash checking

3 Pitch measurement, tooth thickness measurement

4 checking of composite errors, Advances in alignment in errors in gears

Review Questions

Q1 What is the different terminology of Spur Gear? CO2

Q2 Suggest the method to measure the following parameter of spure gear

i) Tooth profile ii) Run out iii) Backlash iv) pitch

Q3 Write a note on Different Errors in Gear tooth profile.

Q4 Write a note on tooth thickness measurement.

Unit

No

10 Unit Title Quality control Planned

Hrs.

03

Unit Outcomes: Solve problems based on quality control and acceptance sampling.


U10 CO6

Lesson schedule

Class

No.


1 Concept of Quality and quality control, elements of quality & its

growth, purpose, setup, policy & objective, factors controlling & quality of

design

2 Conformance, balance between cost and quality and value of quality.

3 Specification of quality ,planning through trial lots and for essential information

Review Questions

Q1 Difference between Inspection and Quality control. CO 6

Q2 Explain how control charts helps in quality control. CO 6

Q3 What is the cost of quality? Explain cost of Failure. CO 6

Q4 Explain cost of Failure. cost of prevention and cost of appraisal CO 6

Q5 What are the factors that control the quality of design? CO 6

Unit

No

11 Unit Title Statistical Quality Control Planned

Hrs.

03

Unit Outcomes: Solve problems based on quality control and acceptance sampling and

Explain the types of control chart to use, depending on given data.


U11 CO5&

CO6

Lesson schedule

Class

No.


1 Importance of statistical method in quality control, measuring of statistical

control variables and attributes

2 Measurement/inspection, different types of control charts

3

(X Bars, R, P. charts) and their constructions and their application

Review Questions

Q1 Write a short note on Chance causes and assignable causes of

variation of data

CO5

Q2 What are the different control charts are used for SQC? Explain. CO5

Q3

In factory producing spark plug the number of defectives found in

inspection of 20 lots of 100 each is given below:

Construct an appropriate control charts and state whether it is in

statistical control or not.

Lot no. No. Of

defectives

Lot no. No. Of

defectives

1 5 11 4

CO5

2 10 12 7

3 12 13 8

4 8 14 3

5 6 15 3

6 4 16 4

7 6 17 5

8 3 18 8

9 3 19 6

10 5 20 10

Unit

No

12 Unit Title Acceptance Sampling Planned

Hrs.

03

Unit Outcomes: Explain the types of control chart to use, depending on given data.


U12 CO6

Lesson schedule

Class

No.


1 Sampling inspection & percentage inspection, basic concept of sampling

inspection

2 producer and consumers risks, AWQL, LTPD, ADGL, Single and double

sampling plans

3 operating characteristic curves, conflicting interests of consumer and producer,

producer and consumers risks,

Review Questions

Q1 Write a short note on AWQL and LTPD CO6

Q2 Difference between single sampling plan and double sampling

plan.

CO6

Q3 Difference between 100% inspection and acceptance sampling. CO6

Q4 Explain operating characteristic curves. CO6


Course Title : METROLOGY AND QUALITY CONTROL Max.

Marks

=100 Duration Day and Date :

Time :

Instructions:

i) Answer any three questions from each section.

ii) Figures to right indicate full marks.

iii) Assume if necessary suitable data and state them clearly.

iv) Draw neat labeled sketch wherever necessary.

v) Use of non-programmable calculators is permissible.

Section-I

Marks

1 a Explain the need of measurement, possible errors in measurement and

precautions to be taken to eliminate errors. 8

b Explain the terms "wear allowance", "Gauge makers tolerance, and,

limit gauge".

8

2 a State the principle of interferometry and explain how it is used in

checking flatness, angle.

8

b Explain the use of interferometry for calibration of slip gauges. 8

3 a State system of tolerancing used in the following pairs. Also, state

what type of fit will result in each case and its application.

1) H7g6 2) H11C11 3) H6K5 4) H7 r8.

8

b What are the various angle measuring methods? Explain any one with

the help of neat sketch. 8

4

Write short notes on (any three)

18

i Sine bar

ii Autocollimator

iii Sources of errors in the measurement

iv Abbe's principle of alignment

v Dial gauges.

Section-II

5 a Sketch different types of textures and direction of lay obtained during

machining operations

8

b What is sampling plan? How it is defined? What is meant by the

operating characteristics of sampling plan?

8

6 a Explain the concept of balance between cost and quality and value of

quality

8

b Discuss three types of pitch errors which may occur on a threaded

component. State possible causes of occurrence of them

8

7

a Twenty five samples of size 50 are considered for analysis of a

process. The number of non conformities for each sample is as shown

in the table. Draw the appropriate control chart and comment on the

process

8

Sample No. No. of non

Conformities

Sample No. No. of non

Conformities

1 4 14 2

2 2 15 3

3 5 16 2

4 3 17 4

5 2 18 6

6 1 19 4

7 3 20 3

8 2 21 2

9 5 22 5

10 4 23 4

11 3 24 3

12 5 25 4

13 5

b Discuss chance causes and assignable causes of variation of data. 8

8 Write short notes on (any three) 18

i Screw thread micrometer

ii Single and double sampling plan

iii Chance causes and assignable causes of variation of data

iv Measuring of composite errors in gear

v Conflicting interests of consumer and producer.

List of experiments to meet the requirements of the syllabus

Experiment No. 1

Experiments

Title

Study and use of linear measuring Instruments CO1

Batch I Q. List out all the types of linear measuring Instruments and explain

with neat sketch the following instruments.(with working principles

,construction ,application and methods of use) 1. Vernier caliper 2. External micrometer 3. Vernier depth gauge 4. Vernier height gauge

Batch II

Batch III

Batch IV

Experiment No. 2

Experiments

Title

Study and Use of comparators CO2

Q.1 What are comparators? List out all the types of compactors and

explain with neat sketch the following instruments.(with working

principles ,construction ,application and methods of use) 1. Mechanical comparator 2. Electrical comparator 3. Pneumatic comparator 4. Optical comparator

Q.2 What are the essential characteristics of comparator

Batch I

Batch II

Batch III

Batch IV Q.3 What are the requirement of good comparators

Experiment No. 3

Experiments

Title

Study & Use of Angle Measuring instruments

CO

Batch I Q1.List out the various instruments used for angle measurement.

explain with neat sketch the following instruments.(with working

principles ,construction ,application and methods of use) 1. Bevel protractor 2. Clinometers 3. Angle Decker 4. Auto collimator

Batch II

Batch III

Batch IV

Experiment No. 4

Experiments

Title

Study & Use Screw Thread measurement

CO

Batch I Q.1 With neat sketch explains the basic terminology of external and

internal threads.

Q.2 How the effective diameter of screw threads is measured by using

thread micrometer and using wire or rod method. Batch II

Batch III

Batch IV

Experiment No. 5

Experiments

Title

Study & Use Gear measurement

Batch I Q.1 Explain the different terminology of Spur Gear?

Q.2 Explain the different types of errors in tooth profile.

Q.3 Explain with neat sketch working construction of gear tooth vernier.

Q.3 Suggest the method to measure the following parameter of spure

gear

i)Tooth profile ii) Run out iii) Backlash iv) pitch

Batch II

Batch III

Batch IV

Experiment No. 6

Experiments

Title

Study & Use of Control charts

Batch I

Q.1 Introduction and basic principles of control charts Explain the

Batch II different control charts are used for SQC?

Batch III

Batch IV

Experiments

Title

Experiment No. 7

Study of Operating characteristics curves

Batch I

Q.1 Explain the characterized terms related with operating

characteristics curves with neat sketch.

Q.2 Explain the single sampling plan and double sampling plan.

Batch II

Batch III

Batch IV

List of additional experiments/Activities – Industrial Visit

Course Plan

Course Manufacturing Engineering Course Code ME 305

Examination

Scheme


Max. Marks 100 25 25 150

Contact

Hours/ week

3 2 -- 5

Prepared by Asst. Prof. Dhulugade Yogesh N. Date 6/5/2014

Prerequisites Basic knowledge of machines, tools.

Course Outcomes


CO1 Describe effect of cutting parameters on tool properties.

CO2 Study the factors affecting on machinability and tool life.

CO3 Study tool geometry of single and multipoint cutting tools.

CO4 Solve problems based on metal cutting.

CO5 Prepare process sheet, develop cam profile, demonstrate and draw layout and

find production rate for single spindle automat.

CO6 Select material, type of jig fixture for a given component.

CO7 Demonstrate practically and draw assembly of jigs and fixtures for a given

Component.

CO8 Describe various press tools and their operations.

CO9 Solve problems based on economic aspects of tooling.

CO10 Explain terms related to economic aspects of tooling.


POs COs


CO1 √

CO2 √

CO3 √

CO4 √ √

CO5 √ √

CO6 √ √

CO7 √

CO8 √ √

CO9 √ √

CO10 √ √

Course Contents


Hours

Section I

1.

2.

3.

Theory Of Metal Cutting- Wedge action, Concept of speed, Feed

and depth of cut, orthogonal and oblique cutting. Mechanics of

metal cutting-Chip formation, Types of chips, cutting ratio, shear

plane and shear angle, velocity relationships, force measurement

by tool dynamometers, cutting tool materials and their properties,

Advanced cutting tools.

Machinability of Metals- Factors affecting, improvement and

machinability index. Tool life - Types of wear, relationship with

cutting parameters, Taylor‟s equation, improvement measures.

Surface finish- Factors affecting, effect of cutting parameters,

improvements. Heat generation in machining, its effect on cutting

force, tool life and surface finish, types and selection criteria of

cutting fluids.

Tool geometry-Parts, angles and types of single point cutting tools,

tool geometry of single point cutting tool, tool geometry of

multipoint cutting tools.-drills, milling cutters, reamers.

Form tools and Automat –Types (Flat, circular, Dovetail)

Correction of form tools with and without rake angles, tool

layout of single spindle, automat, process sheet, cam profile,

tool layout, calculation of production rate.

(12)

(02)

(06)

Section II

4.

5.

6.

Jigs and Fixtures- Applications, basic elements, principles and

types of locating, clamping and indexing elements, auxiliary

elements like tenon, setting lock etc. Type of Jigs and Fixtures-

Design consideration of Jigs and fixtures with respect to different

operations.

Press tools – Dies, punches, types of presses, clearances, types of

dies, strip layout, calculation of press capacity, center of pressure,

Design consideration for die elements.

Economic aspect of tooling-Elements of costs, method of costing

and cost estimation, depreciation, economic of tooling –Tool

selection and tool replacement with respect

to small tools.

(10)

(06)

(04)

Reference Books:

Sr. No. Title of Book Author Publisher Edition

1. Text Book of

Production Engg.

P.C. Sharma S. Chand

Publication

8th Edition

2. Production

Technology

S.Karunakaran Tata McGraw-Hill

Publishing Ltd

1st

Edition

1980

3. Tool Design- – Donaldson THM Publication 1st Edition

1976

4. Machine tool Engg.- - G.R. Nagapal Khanna Publication 6th Edition

5. Thoery of Metal

Cutting-

Sen Bhattacharya New central book

agency pvt. Ltd.

1st Edition

1984

6. Production Engg.

Design (Tool Design)-

S. Chandar & K.

Surendra

Satya Prakashan-

Delhi

2nd

Edition

1994

7. Metal cutting and

Machine Tools

Thirupati Reddy Scitech Publication -

8. Production

Technology

Thirupati Reddy Scitech Publication -

Scheme of Marks


1

1 Theory Of Metal Cutting 24

2 Tool geometry 8

3 Form tools and Automat 24

2

4 Jigs and Fixtures 24

5 Press tools 24

6 Economic aspect of tooling 8

Course Unitization

Section

Unit Course

Outcomes

No. of Questions in


I 1,2 Theory Of Metal

Cutting,

Tool geometry

CO1,CO2 Attempt any

two questions

out of three.

II 4,5 Jigs and Fixtures

Press tools

CO6,CO7,

CO8

Attempt any

two questions

out of three.


Section I

Unit No 1 Unit Title Theory Of Metal Cutting Planned Hrs. 12

Unit Outcomes


UO1 Describe effect of cutting parameters on tool properties. CO1

UO1 Study the factors affecting on machinability and tool life. CO2

Lesson schedule

Class

No.


1 Wedge action, Concept of speed,

2 Feed and depth of cut, orthogonal and oblique cutting.

3 Mechanics of metal cutting-Chip formation, Types of chips

4 cutting ratio, shear plane and shear angle,

5 velocity relationships,

6

tool dynamometers

7 Force measurement by cutting tool materials and their properties, Advanced

cutting tools.

8 Machinability of Metals- Factors affecting, improvement and machinability index.

9 Tool life - Types of wear, relationship with cutting parameters, Taylor‟s equation,

improvement measures.

10 Surface finish- Factors affecting, effect of cutting parameters, improvements.

11 Heat generation in machining, its effect on cutting force,

12 tool life and surface finish, types and selection criteria of cutting fluids

Review Questions

Q1 Explain orthogonal and oblique cutting with neat sketch. CO1

Q2 Explain Chip formation mechanics. CO1

Q3 Explain different types of dynamometers. CO1

Q4 Explain factors affecting on machinability and tool life. CO2

Q5 Explain nachinability. CO2

Q6 Expalin types of wear. CO2

Q7 Expalin heat generation in machining and its effect on cutting

force

CO2

Unit No 2 Unit Title Tool geometry Planned Hrs. 02

Unit Outcomes


UO1 Study tool geometry of single and multipoint cutting tools. CO3

UO1 Solve problems based on metal cutting. CO4

Lesson schedule

Class

No.


13 Parts, angles and types of single point cutting tools, tool geometry of single point

cutting tool

14 Tool geometry of multipoint cutting tools.-drills, milling cutters, reamers.

Review Questions

Q1 Explain tool geometry of single point cutting tool. CO3

Q2 Explain Tool geometry of multipoint cutting tools.-drills,

milling cutters, reamers

CO3,4

Unit No 3 Unit Title Form tools and Automat Planned Hrs. 06

Unit Outcomes


UO1 Prepare process sheet, develop cam profile, demonstrate and draw

layout and find production rate for single spindle automat.

CO5

Lesson schedule

Class

No.


15 Form tools and Automat –Types (Flat, circular, Dovetail)

16 Correction of form tools with and without rake angles,

17 tool layout of single spindle, automat

18 process sheet

19 process sheet, cam profile, tool layout

20 Calculation of production rate.

Review Questions

Q1 What are different types of form tools? CO5

Q2 The component is shown in figure is to be processed on single

spindle automat. Study the component and prepare: i) Detailed

process sheet.ii) Tool layout. iii) Cam profiles for all radial and

axial operations. iv) Production rate per hour.

CO5

Section II

Unit No 4 Unit Title Jigs and Fixtures Planned Hrs. 10

Unit Outcomes


UO1 Select material, type of jig fixture for a given component. CO6

UO1 Demonstrate practically and draw assembly of jigs and fixtures for

a given Component.

CO7

Lesson schedule

Class Details to be covered

No.

21 Applications ,basic elements, ,

22 principles and types of locating

23 clamping and indexing elements

24 Auxiliary elements like tenon, setting lock

25 Type of Jigs and Fixtures




29 Design consideration of Jigs and fixtures with respect to different operations.

30 Design consideration of Jigs and fixtures with respect to different operations.

Review Questions

Q1 Explain principle of location. CO6

Q2 Explain types of jigs and fixtures. CO6

Q3 Explain types of locating, clamping and indexing elements. CO6

Q4 Design and draw a neat dimensional sketch in three views with

one sectional view of a suitable drilling jig for Ø 12 holes, 4

no.s in a flange shown in Fig. Show clearly the location,

clamping and jig bushes. This is a last operation. All

dimensions are in mm.

CO7

Unit No 5 Unit Title Press tools Planned Hrs. 06

Unit Outcomes


UO1 Describe various press tools and their operations. CO8

Lesson schedule

Class

No.


31 Press Tool-Dies, punches

32 types of presses

33 clearances, types of dies

34 strip layout

35 Calculation of press capacity, center of pressure

36 Design consideration for die elements

Review Questions

Q1 Explain types of presses. CO8

Q2 Differentiate blanking and punching. CO8

Q3 Explain different terms used in press working. CO8

Q4 A hole of 60 mm diameter is to be produced in 2.5 mm thick

steel plate. The ultimate shear strength of the plate material

is 450 N/mm2. If the punching force is to be reduced to the half

of the force using a punch without shear, estimate the amount

of shear on a punch. Take the percentage penetration as 40%.

CO8

Unit No 6 Unit Title Economic aspect of tooling Planned Hrs. 04

Unit Outcomes


UO1 Solve problems based on economic aspects of tooling. CO9

UO1 Explain terms related to economic aspects of tooling. CO10

Lesson schedule

Class

No.


37 Economic aspect of tooling-Elements of costs

38 Method of costing and cost estimation, depreciation

39 Economics of tooling

40 Tool selection and tool replacement with respect to small tools

Review Questions

Q1 Explain methods of costing and elements of costs. CO10

Q2 Enumerate the methods of distributing depreciation and discuss

any one in detail.

CO10

Q3 Market price of machine is Rs 6000 and discount allowed to

distributors is 20% of the market price for a certain period, it

was found that the selling cost was half the factory cost. The

material cost, labor cost and overhead charges for the company

are in the ratio of 1:4:2. If the material cost is 400, what profit

is made by factory on each machine?

CO9

Course Plan

Course CONTROL ENGINEERING Course Code 48709

Examination

Scheme


Max. Marks 100 25 - 125

Contact

Hours/ week

3 2 - 05

Prepared by Ajay P. Dhawan and P. M. Sagare Date 08/05/2014

Prerequisites Partial Expansion, Laplace Transform

Course Outcomes


CO1 Explain difference between open loop & closed loop control system.

CO2 Solve examples on F-V & F-I analogy.

CO3 Apply rules for Reduction of Block Diagram.

CO4 Convert non-linear equation into linear equation

CO5 Solve examples on steady state operations.

CO6 Learn stability ,S-plane & do analysis with Root locus.

CO7 Learn different types of inputs & transient response specifications.

CO8 Provide a generalized technique for investigating the behavior of control

system.


POs

COs a b c d e f g h i j k l

CO1 √ √

CO2 √ √ √

CO3 √ √ √

CO4 √ √

CO5 √ √

CO6 √ √

CO7 √ √ √ √

CO8 √ √ √

Course Contents


Hours

SECTION I

1. Introduction to Automatic Control:

Generalized Control System Types, Open Loop and Closed Loop,

Linear and Non-Linear, TimeVariant and Time invariant Systems

with

examples. Advantages of Automatic Control Systems

02

2 Mathematical Model of Control System:

Mechanical Translational Systems, Rotational System, Grounded

Chair Representation, Electrical Elements, Analogous Systems,

Force – Voltage Analog, Force – Current Analog, Mathematical

Model of Liquid Level System, Hydraulic/Pneumatic System,

Thermal System, Gear Train

06

3 Block Diagram Algebra and Control Components:

Rules for Reduction of Block Diagram, Control System Components

– Tachometer, D.C. Servomotor , Hydraulic Servomotor, Stepper

Motor, Jet – PipeAmplifier, Pneumatic Amplifier

04

4 Linearization of nonlinear function:

Linearization of nonlinear equation & linearization of operating

curves.

04

5 Steady state operations:

Generalized feedback system, Equation for controller & equation for

system to be controlled.

04

SECTION II

06 Stability and Root Locus Technique:

Routh‟s Stability Criteria, Significance of Root Locus, Construction

of Root Loci, General Procedure, Effect of Poles and Zeros on the

System Stability

06

07 Transient Response :

General Form of Transfer Function, Concept of Poles and

Zeros, Distinct, Repeated and Complex Zeros. Response of systems

(First and Second Order) to Various Inputs (Impulse, Step, Ramp &

Sinusoidal). Damping Ratio and Natural Frequency. Transient

Response Specification

08

08 State Space Analysis:

System Representation, Direct, Parallel, Series and General

Programming, Conversion of State Space Model to Transfer

Function.

06

Reference Books:

Sr.

No.

Title of Book Author Publisher/Edition Topics

1 Control System Engineering R Anandnatarajan,

P. Ramesh Babu

SciTech Publi. All

2 Control Systems A. Anand Kumar, Prentice Hall Publi All

3 Automatic Control Engineering F.H. Raven Tata McGraw Hill Publi. All

Scheme of Marks


I 1 Introduction to Automatic Control 8

2 Mathematical Model of Control System 12

3 Block Diagram Algebra and Control Components 8

4 Linearization of nonlinear function 12

5 Steady state operations 12

II 6 Stability and Root Locus Technique 16

7 Transient Response 16

8 State Space Analysis 16

Course Unitization

Section

Unit Course Outcomes No. of Questions in


I 1 Introduction to

Automatic Control

Explain difference

between open loop &

closed loop control

system.

Q1

2 Mathematical

Model of Control

System

Solve examples on F-V &

F-I analogy.

Q2 & Q3

II 6 Learn stability ,S-plane &

do analysis with Root

locus

Q1 ,Q2 & Q3


Section I

Unit No 1 Unit Title Introduction to Automatic Control Planned Hrs. 02

Unit Outcomes


UO1 Learn different components of control system CO1

UO2 Differentiate between open loop & closed loop control system CO1

Lesson schedule

Class No. Details to be covered

1 Classification of Control System

2 Difference between open loop & closed loop control system.

Review Questions

Q.1 Write classification of Control System? CO1

Q.2 Write difference between open loop & closed loop control system CO1

Unit No 2 Unit Title Mathematical Model of Control System Planned Hrs. 06

Unit Outcomes


UO1 Draw the block diagram of mass, spring & damper CO2

UO2 Draw the block diagram of Resistance, Capacitor & Inductor CO2

UO3 Learn F-V & F-I analogy CO2

Lesson schedule


3 Mathematical model for mass, spring & damper.

4 Mathematical model for resistance,capacitor & Inductor.

5 F-V analogy.

6 F-I analogy.

7 Grounded chair representation.

8 Examples on Grounded chair representation.

Review Questions

Q.1 For the mechanical system shown in fig.

a) Construct Direct analog.

b) Construct Inverse analog.

Write the force equation for both the cases.

CO2 M

K

B

F X

Y

Q.2 For the mechanical system

shown in fig, determine the

equation which relates

x-f, y-f and y-x.

CO2

Unit No 3 Unit Title Block Diagram Algebra and Control

Components

Planned Hrs. 04

Unit Outcomes


UO1 Reduce a complicated block diagram to input & output variables marked outside

the block & the equivalent functional relationship marked inside the block.

CO3

UO2 Learn derivation of hydraulic ,Pneumatic & Dc motor CO3

Lesson schedule


9 Rules to reduce block diagram

10 Examples on block diagram

11 Derivation of hydraulic system

12 Derivation of DC motor.

Review Questions

Q.1 Explain hydraulic system CO3

Q.2 Explain DC motor CO3

Unit No 4 Unit Title Linearization of nonlinear function Planned Hrs. 04

Unit Outcomes


UO1 Convert non-linear equation into linear equation CO4

UO2 Learn linearization of operating curves. CO4

Lesson schedule


13 Linearization of nonlinear equation theory

14 Examples on linearization of nonlinear equation

15 Examples on linearization of nonlinear equation

16 Examples on operating curves.

Review Questions

Q.1 The equation for length of chord L=2.Rsin (θ /2) where R is the radius.

Determine the equation for the variation l in the length due to a change r in the

radius and change Δ θ of the angle. For Ri=10 and θi=600,what is the approximate

value of L when R=12 and θ =63o

CO4

Unit No 5 Unit Title Steady state operations Planned Hrs. 04

Unit Outcomes


UO1 Learn controller CO5

UO2 Learn system to be controlled CO5

Lesson schedule


17 Derivation for generalized feedback system

18 Numerical on Steady state operations



Review Questions

Q.1 The steady state operating curve for unity feedback

system are shown in figure 3. Construct the block

diagram that describes the steady state operation of

system. Hence find out equation for steady state

operation.

CO5

Q.2 The steady state curves for a system to be

controlled are shown in fig. III.The reference

operating point is Vi= Ci= 100, Ui = 40 and Mi =

60. Determinethe values of B and KG2. Determine

the slope of the controller lines such that when load

changes from 40 to 50 the output will not change

more than 2 units.For KH = 1.6, determine the value

of A such that C = V, when u = 0.

CO5

Unit No 6 Unit Title Stability and Root Locus Technique Planned Hrs. 06

Unit Outcomes


UO1 Understand the stability criteria of the system. CO6

UO2 Evaluate stability of the system by various methods especially Routh‟s Criteria. CO6

Lesson schedule

Class No.

21 Routh‟s stability criteria.

22 Numerical on Routh‟s criteria.

23 Significance of Root Locus. Construction of Root Loci.

24 Construction of Root Loci, General Procedure.

25 Effect of poles and zeros on the system stability.

26 Numerical on Root Locus.

Review Questions

Q.1 Apply Routh‟scriterion, determine the number of roots that lie in right half plane of

the following characteristic equation. Comment on the system stability.

s4 + 5s

3 + 7s

2 + 5s + 6 = 0

CO6

Q.2 Sketch the root loci for the system

shown in figure 5a. and show that

the system is stable for all K>0

CO6

Q.3 Sketch the root locus of the unity feedback system whose open loop function is

K (s2 – 2s + 2)

G(S) = ----------------------

(s+2) (s+3) (s+4)

CO6

Q.4 The open loop transfer function of an aero plane with an autopilot is represented

K(s+1)

G(s) . H(s) = ---------------------------- Determine :

s(s – 1) (s2 + 4s + 16) i) Limiting value of K

ii) Cross over frequency

iii) Break away points

iv) Angle of departure

CO6

Unit No 7 Unit Title Transient Response Planned Hrs. 08

Unit Outcomes


UO1 Analyze response of system, first & second order to various inputs. CO7

UO2 Analyze damping ratio, natural frequency of transient system with specifications. CO7

Lesson schedule


27 General form of transfer function.

28 Concept of Poles & Zeros. Distinct, Repeated & Complex Zeros.

29 Responses of First order & Second order system.

30 Types of inputs (impulse, step, ramp & sinusoidal) & responses by system with inputs.

31 Damping Ratio & Natural Frequency calculations.

32 Examples on Damping Ratio & Natural Frequency with various inputs.

33 Evaluate Transient Response with Specifications

34 Examples to evaluate transient response of system with various inputs & specifications.

Review Questions

Q.1 For the unity feedback

system shown in figure 5b,

find damping ratio, natural

frequency, damped natural

frequency and percentage

overshoot.

CO7

Q.2 A unity feedback system having forward transfer function

K

G(s) = ------------- is subjected to a unit step input. Determine the values of

s(Ts + 1) K & T if output response curve shows 25.4 % maximum over shoot at 3 second

peak time. Also find rise time and settling time.

CO7

Unit No 8 Unit Title State Space Analysis Planned Hrs. 06

Unit Outcomes


UO1 Analyze system representation through mathematically & using advanced

programming techniques.

CO8

UO2 Convert state space model to transfer function. CO8

Lesson schedule


35 Representation of system mathematically & programming variables.

36 Programming techniques with various methods like Direct Programming.

37 Programming techniques with various methods like Parallel Programming.

38 Programming techniques with various methods like Series Programming.

39 Programming techniques with various methods like General Programming.

40 Conversion of state space model to transfer function, examples.

Review Questions

Q.1 Determine the state space representation

for the feedback control system shown in

figure 7b.

CO8

Q.2 The dynamics of helicopter in the hovering condition are described by the

differential equation

1

y (t) = ----------------------. f (t).

(D + 2) (D + 3) Determine computer diagram by i) Direct Programming ii) Parallel Programming

CO8

Q.3 Determine the transfer function G(s) for following state space model.

CO8

Q.4 A transfer function of a system is representation as

C(s) s3 + 8s

2 + 17s + 8

----- = ------------------------- . Determine the computer diagram and

R(s) s3 + 6s

2 + 11s + 6

state space representation by using direct programming.

CO8

Q.5 Determine the state space representation

and computer diagram for the feedback

system shown in figure 7b.

CO8


T.E. (Mechanical) – I (Semester – V)

Examination, June 2013

CONTROL ENGINEERING (New)

Sub. Code : 48709

Day and Date :Saturday, 08-06-2013 Total Marks : 100

Time :10.00a.m. to 1.00 p.m.

Instructions : 1) Question Number 1 from Section-I and 5 from Section-II are

compulsory. Attempt any two questions from remaining three from

each section.

2) Figures to right indicate full marks.

3) Make suitable assumptions wherever necessary and mention it clearly.

SECTION - I

Q. 1 a) For thermometer shown in figure 1a, the ambient

temperature is Ta and temperature of fluid is T. The rate

of heat flow from surrounding medium to the fluid is

Q = C1 (Ta – T). The rate of change of temperature of

fluid is DT = C2.Q. Construct the block diagram

representation for this system in which Ta is input and T

is output. Determine the time constant τ.

6

b) Find differential

equation between x

and y for the

mechanical system

shown in figure 1b.

6

c) Explain Force Current analog. 6

Q. 2 a) For sonic flow of air through a restriction the mass flow rate is 8

0.53

M = ______ AP. Where M is mass flow rate, T is inlet temperature, A is area of

√T

Restriction and P is inlet pressure. Determine linear approximation for the

variation m when area of restriction A is held constant.

b) The block diagram and steady state operating curves for a pressure control

system are shown in figure 2b. At the reference operating condition

Vi = Ci = 100, Mi = 50 and Ui = 25. Determine K2 and B. Determine K1 such

that V = Vi (v=0), the change in controlled variable will be 1 unit when load

changes by 5 units.

8

Q. 3 a) Reduce the block diagram shown in figure 3a and obtain transfer function.

8

b) Derive the transfer function for the armature controlled DC Servomotor and

represent it with the block diagram. 8

Q. 4 a) Steady state operating curves for a unity feedback control system s shown in

figure 4a. Construct the block diagram that describes the steady state operation

of this system.

8

b) Explain Linearization of operating curves with the help of example. 8

SECTION - II

Q. 5 a) Sketch the root locus of the unity feedback system whose open loop function is

K (s2 – 2s + 2)

G(S) = ----------------------

(s+2) (s+3) (s+4) 9

b) Find the transfer function for the system which is represented in state space

representation as follows,

ẋ 1 = -2 x1 + x2; ẋ 2 = -3 x2 + x3; ẋ 3 = -3 x1 – 4 x2 – 5 x3 + u(t) and

y(t) = x2 9

Q. 6 a) A unity feedback system having forward transfer function

K

G(s) = ------------- is subjected to a unit step input. Determine the values of

s(Ts + 1) K & T if output response curve shows 25.4 % maximum over shoot at 3 second

peak time. Also find rise time and settling time. 8

b) The open loop transfer function of an aero plane with an autopilot is represented

K(s+1)

G(s) . H(s) = ---------------------------- Determine :

s(s – 1) (s2 + 4s + 16) i) Limiting value of K

ii) Cross over frequency

iii) Break away points

iv) Angle of departure 8

Q. 7 a) Determine value of K &α, so that unity feedback system oscillates at a

frequency of 2 rad/sec. The system has open loop transfer function

K (s+1)

G(s) = ---------------------------.

S3 + α s

2 + 2s + 1

b) Determine the state space representation and computer diagram for the feedback

system shown in figure 7b.

8

Q. 8 a) A transfer function of a system is representation as

C(s) s3 + 8s

2 + 17s + 8

----- = ----------------------------- . Determine the computer diagram and

R(s) s3 + 6s

2 + 11s + 6

state space representation by using direct programming. 8

b) The forward loop of unity feedback control system is given by

K

G(s) = ------------. It is desired to vary K from 8 to 13 and determine the value of

s (s + 6) K above which the system exhibits oscillations behavior. 8

Course :CONTROL ENGINEERING Course Code : 48709

Course Outcomes:

On completion of the course the student will be able to

COs POs PEOs

CO1 Explain difference between open loop & closed loop

control system.

a,l PEO2,

PEO3 CO2 Solve examples on F-V & F-I analogy. a,b,l

CO3 Apply rules for Reduction of Block Diagram. a,b,l

CO4 Convert non-linear equation into linear equation a,b

CO5 Solve examples on steady state operations. a,b

CO6 Learn stability ,S-plane & do analysis with Root locus. a,b

CO7 Learn different types of inputs & transient response

specifications.

a,b,e,f

CO8 Provide a generalized technique for investigating the

behavior of control system.

a,b,e

Assessment Tools used and COs matrix

Assessment Tool Course Outcomes % contribution

CO1 CO2 CO3 CO4 CO5 CO6 CO7 CO8

University Exam. 12 12 12 14 12 14 12 12

Continuous Assessment Tests 10 20 20 -- 10 40 -- --

Quizzes/orals/Course exit survey 12 12 12 14 12 14 12 12

Assignments/Termwork 12 12 12 14 12 14 12 12

Project -- -- -- -- -- -- -- --

Special/COs evaluation/

students feedback -- -- -- -- -- -- -- --

Overall percentage distribution

Assessment University

Examination

CAT Course

exit

survey

Assignments Project

work

Special

tools

Overall

percentage 50% 25% 15% 10% -- -- 100%

Laboratory COURSE OUTCOMES (COs) for Course ‘Control Engineering’ :

COs Description

CO1 Study of various control systems and control for the system.

CO2 Study of control modes like P, PD, PI, PID for Pressure, Temperature, Flow.

CO3 Design of automatic system for Temperature / Speed.

CO4 Evaluation of stability with various techniques like Root Locus, State Space

Analysis

CO5 Use software tool like MATLAB for system design, performance evaluation.

Laboratory Contributions to the attainments of PROGRAM OUTCOMES (POs)

Laboratory COs Description POs

Control Engineering

CO3, CO4 Analysis a, b, c, d, l,

CO1 Presentation d,

CO3 Design j,

CO5 Usage of modern tool e, l,

CO2,CO4, CO5 skills f, k, l,

CO1 ethics g, h, i

--- Team work g

CONTROL ENGINEERING

Assignments / Experiments :


Assignment No. 1

Assignment Title Assignment on Root Locus (Procedure & Examples) CO4

Batch I Sketch a root locus for a system with an open loop transfer function

K . (s + 1)

G (s) . H (s) = ---------------------

(s2 + 4 s + 13)

Batch II The characteristic equation for a system is

s.( s3 + 4s

2 + 2s + 3) + K (s + 1) = 0. Determine range of values of K for

which the system is in stable condition.

Batch III Sketch the root loci for the

system shown in figure 5a. and

show that the system is stable

for all K>0

Batch IV Sketch the root locus of the unity feedback system whose open loop

function is

K (s2 – 2s + 2)

G(S) = --------------------------

(s+2) (s+3) (s+4)

Assignment No. 2

Assignment Title Assignment on State Space Analysis (Procedure & Examples) CO4

Batch I Determine the state space

representation for the

feedback control system

shown in figure 7b.

Batch II The dynamics of helicopter in the hovering condition are described by the

differential equation

1

y (t) = ----------------------. f (t).

(D + 2) (D + 3)

Determine computer diagram by i) Direct Programming ii) Parallel

Programming

Batch III Find the transfer function for the system which is represented in state space

representation as follows,

ẋ 1 = -2 x1 + x2; ẋ 2 = -3 x2 + x3; ẋ 3 = -3 x1 – 4 x2 – 5 x3 + u(t) and

y(t) = x2

Batch IV Obtain transfer function of two input signal output system represented by

state space model.

Experiments

Experiment 1 Study of ON-OFF Controller for Temperature CO1

Experiment 2 Study of Control Modes like P, PD, PI, PID CO2

Experiment 3 Design of Automatic System for Temperature / Speed with

a) Plant Layout b) Block Diagram c) Controller

d) Steady State Analysis.

CO3

Experiment 4 Use of software „MATLAB‟ CO5

List of additional assignments /experiments

Assignments

Assignment(s) Assignment on Various Topics

(Theory, Procedure & Examples)

CO1,CO2,

CO3,CO4,

CO5, CO6

List of open ended experiments/assignments

Experiments

Experiment(s) Use of software „MATLAB‟ CO5

Documents

Shivaji University, Kolhapur T.E. Mechanical Engineering ... · T.E. Mechanical Engineering Scheme of Teaching & Examination ... 3 Theory of Machines Khurmi R. S S. Chand Pub