Question Paper Code : 31391 - Fmcetfmcet.in/EEE/EE6404_auque.pdf · (Common to PTEE 2201 Measurements and Instrumentation for B.E. (Part ... Write short notes on : (i) ... Grounding

Question Paper Code : 31391

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2013.

Third Semester

Electrical and Electronics Engineering

EE 2201/EE 33/EI 1202/10133 EE 302/080280016 MEASUREMENTS ANDINSTRUMENTATION

(Regulation 2008/2010)

(Common to PTEE 2201 Measurements and Instrumentation for B.E. (PartTime)Third Semester Electrical and Electronics Engineering Regulation 2009)

Time : Three hours Maximum : 100 marks

Answer ALL Questions

PART A (10 x 2 = 20 marks)

1. Define the terms precision and sensitivity.

2. What is the significance of calibration?

3. Write any four types of analog ammeter used for instrumentation.

4. What are the different methods used for frequency measurement in powerfrequency range?

5. What are the applications of potentiometers?

6. What are the sources of Electromagnetic interference?

A.AHAMED RIAZUDEEN AP/ EEE

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7. Distinguish between LED and LCD.

8. What are the functions of data logger?

9. What are the factors to be considered for selection of transducers?

10. Mention any four types of Analog to Digital convertor?

PART B (5 x 16 = 80 marks)

11. (a) Describe the functional elements of an instrument with a block diagramand draw the static and dynamic characteristics. (16)

Or

11. (b) A circuit was tuned for resonance by eight different students and thevalue of resonant frequency in KHz were recorded as 532, 548, 543, 535, 546,531, 543 and 536. Calculate

(i) Arithmetic mean.(ii) Deviation.(iii) Average deviation.(iv) Standard deviation. (16)

12. (a) Describe the construction and working of permanent magnet movingcoil instrument. Also derive the expression for deflection. (16)

Or

12. (b) Write short notes on :(i) Current transformer. (8)(ii) Weston frequency meter. (8)


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13. (a) Explain how the inductance is measured in terms of known capacitanceusing Maxwell’s bridge. Derive the conditions for balance. (16)

Or

13. (b) Explain the following :(i) Grounding techniques. (8)(ii) Causes of Electromagnetic measurements in measurements. (8)

14. (a) With neat diagram, explain the basic components and working principleof magnetic tape recorder. (16)

Or

14. (b) With the help of the fundamental block diagram, explain the workingprinciple of digital storage oscilloscope, mention its advantages over analogCRO? (16)

15. (a) Explain the construction and working principle of linear variabledifferential transformer (LVDT). (16)

Or

15. (b) (i) What is data acquisition system? With generalized block diagram,explain the functions of it. (10)

(ii) Write short notes on smart sensors. (6)


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B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2009Third Semester

Electrical and Electronics EngineeringEE2201 — MEASUREMENTS AND INSTRUMENTATION

(Regulation 2008)Time : Three hours Maximum : 100 Marks

Answer ALL QuestionsPART A — (10 × 2 = 20 Marks)

1. Differentiate Resolution from Threshold.

2. How are the absolute and relative errors expressed mathematically?

3. What are the essential torques required for operating an instrument?

4. What is phase meter? Mention the types of phase meter.

5. What is an isolation amplifier? Where is it used?

6. State the condition for balance in a Wheatstone bridge.

7. What are the types of printers according to printing methodology?

8. What are the main parts of the cathode ray tube?

9. Differentiate sensor from transducer.

10. Draw the block diagram for 4 bit Analog to Digital Converter.

PART B — (5 × 16 = 80 Marks)

11. (a) Define and explain the static characteristics of an instrument.

OR

(b) (i) Draw and explain the general block diagram of measurement system.


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(ii) Write a note on different types of errors.

12. (a) Describe the construction and working principle of single phaseinduction type energy meter. Write a short note on any two adjustmentsrequired in energy meters.

OR

(b) Explain with neat sketch the classification of Instrument Transformers.Write a note on the errors affecting the characteristics of an InstrumentTransformer.

13. (a) With a neat sketch describe a bridge to determine the unknowninductance and a bridge to determine the unknown capacitance.

OR

(b) Explain the grounding techniques in detail to reduce the ground loopinterference signal.

14. (a) Describe the LED and LCD display devices.

OR

(b) Describe the direct and frequency modulation magnetic tape recordingtypes. Give its merits and demerits.

15. (a) What are the selection criteria for the transducer? Explain the workingprinciple of LVDT with neat sketch and characteristics. Giveadvantages, disadvantages and applications of LVDT.

OR

(b) What are the performance parameters of Analog to Digital Converter?Explain any two basic A/D conversion techniques in detail.


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Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010

Third Semester


EE2201 — MEASUREMENTS AND INSTRUMENTATION

(Regulation 2008)

Time: Three hours Maximum: 100 Marks

Answer ALL Questions

PART A — (10 × 2 = 20 Marks)

1. What are the static characteristics of measurement system?

2. What is the significance of calibration?

3. Write any four types of analog ammeter used for instrumentation.

4. List out the methods used for measurement of iron loss in ferromagnetic

materials.

5. What is the use of potentiometer in the field of electrical measurement?

6. What is the need for screening?

7. Give the functional difference between Strip chart recorder and X-Y recorder.

8. What are the merits and demerits of Digital Storage Oscilloscope?

9. Define inverse transducers with example.

10. Mention any four types of Analog to Digital converter.

PART B — (5 × 16 = 80 Marks)

11. (a) What are the basic functional blocks of a generalized instrumentation

system? Draw the various blocks and explain their functions. (16)

Or

Question Paper Code: E3082 4

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E 3082 2

(b) A circuit was tuned for resonance by eight different students, and the

value of resonant frequency in kHz were recorded as 532, 548, 543, 535,

546, 531, 543 and 536. Calculate (i) the arithmetic mean, (ii) deviation

from the mean, (iii) average deviation, and (iv) standard deviation. (16)

12. (a) With a neat diagram, explain the construction, working principle of

single phase wattmeter. What is the importance of deflection torque in

these instruments? (12 + 4)

Or

(b) Write short notes on :

(i) Use of current transformer for current and power measurement. (8)

(ii) Working of Weston frequency meter. (8)

13. (a) What are the difficulties associated with measurement of low resistance?

Describe how low resistance is measured accurately by Kelvin’s double

bridge. (4 + 12)

Or

(b) (i) Discuss the effects of electro static and electromagnetic interference

in instruments. (8)

(ii) Write short notes on Grounding techniques. (8)

14. (a) Explain the principle of working of a magnetic tape recorder. What are

its basic components and their functions? (10 + 6)

Or

(b) Briefly discuss the use of LED and LCD as display devices in

instrumentation. Comment on their relative merits and demerits. (16)

15. (a) Explain the principle of the following transducers

(i) Strain gauges (8)

(ii) Piezoelectric transducers. (8)

Or

(b) What is data acquisition system? Give the block diagram arrangement of

a data acquisition system and describe the function of each component.

(16)

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Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2011

Third Semester


EE 2201 — MEASUREMENTS AND INSTRUMENTATION

(Regulation 2008)


Answer ALL questions

PART A — (10 × 2 = 20 marks)

1. Define dynamic characteristics of an instrument.

2. Write down the different Standards of an instrument.

3. State the purpose of Shunts in the Voltmeter.

4. Classify different types of iron loss.

5. List the application of A.C. bridge.

6. Enumerate the principle of grounding.

7. List any two storage devices.

8. Differentiate the functions of printer and plotter.

9. Write the function of transducer.

10. Give any two applications of Smart Sensors.

PART B — (5 × 16 = 80 marks)

11. (a) Describe the static and dynamic characteristics of measuring instrument. (16)

Or

(b) (i) Explain the concept of static evaluation of measurement data. (8)

(ii) Describe the different calibration procedures of measuring instrument. (8)


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11307 2

12. (a) (i) With a neat block diagram, explain the construction and operating principle of digital voltmeter. (8)

(ii) Describe the functional operation of energy meter. (8)

Or

(b) (i) Describe the basic magnetic measurement using B-H curve (8)

(ii) Explain the operating principle of instrument transformer. (8)

13. (a) (i) Describe the operation of A.C. potentiometer. (8)

(ii) With a neat bridge network, derive the general equation for bridge balance with a neat a.c. bridge diagram. (8)

Or

(b) Explain the operation of Schering Bridge to determine the unknown capacitance. Derive the relevant equations and explain the computation procedure using phasor diagram. (16)

14. (a) Write brief notes on

(i) Magnetic disk and tape

(ii) Recorders and printers. (8+8)

Or

(b) With a help of simplified block diagram, explain the construction and operating principle of general purpose Cathode Ray Oscilloscope. (16)

15. (a) (i) Explain the measurement of resistance using strain gauge. (8)

(ii) Describe the various factors influencing the type of transducer for a particular application. (8)

Or

(b) Explain the principle of operation.

(i) Piezoelectric transducer. (8 + 8)

(ii) A/D converter.

————––––——

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Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2010

Third Semester



(Regulation 2008)

Time : Three hours Maximum : 100 Marks

Answer ALL questions

PART A — (10 × 2 = 20 Marks)

1. Define static characteristics of an instrument.

2. What is meant by absolute error of measurement?

3. Why are the ordinary wattmeters not suitable for low power factor circuits?

4. What is a phase sequence indicator?

5. List the application of D.C. potentiometers.

6. What are parasitic voltages and how are they eliminated?

7. What is the purpose of a Post Deflection Acceleration (PDA) in a CRT?

8. Differentiate between LED and LCD.

9. What are the classifications of encoder?

10. What is the need of sample and hold circuit in A/D converter?

Question Paper Code : 53132 4

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53132 2

PART B — (5 × 16 = 80 Marks)

11. (a) (i) Draw the block diagram of functional elements of measuring system

and explain the function of each block. (8)

(ii) Explain the different types of errors in measurements. (8)

Or

(b) (i) The probable values of two resistors and their S.D are specified as

R1 – 18.62 Ω , S.D = 0.025 Ω , R2 = 74.48 Ω , S.D. = 0.05 Ω . Find the

probable value and S.D for the two resistors when they are

connected in

(1) Series and

(2) Parallel. (8)

(ii) Discuss the different types of standards of measurements. (8)

12. (a) (i) What are the various types of digital voltmeters? With a neat

sketch explain the working principle of any one type of a digital

voltmeter. (8)

(ii) With a neat diagram explain the construction and its working

principle of electrodynamometer type wattmeter. Also derive its

torque equation. (8)

Or

(b) (i) Explain the method of measurements of B.H curve of a ring

specimen with a neat diagram. (8)

(ii) Describe the construction and working principle of digital frequency

meter. (8)

13. (a) (i) Draw a neat sketch of a modern slide-wire D.C potentiometer and

discuss how the potentiometer is standardized. (8)

(ii) Describe how co-ordinate type potentiometer can be used for

calibration of a voltmeter and A.C energy meters. (8)

Or

(b) (i) Explain the theory and working principle of Kelvin’s double bridge

method for measurement of low resistance. Derive the relation for

finding unknown resistance. (8)

(ii) Discuss briefly how Hay’s Bridge can be used for the measurement

of inductance. (8)

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53132 3

14. (a) (i) Explain the construction and its working principle of X-Y Recorder.

(6)

(ii) Briefly discuss the features of digital plotters and printers. (10)

Or

(b) (i) Explain the working principle of electrostatic deflection system in a

CRT. (10)

(ii) Explain the working principle of digital storage oscilloscope. (6)

15. (a) (i) Explain the construction and working of unbounded and bonded

type strain gauges. (8)

(ii) Explain the construction and working of optical encoders with a

neat diagram. (8)

Or

(b) (i) Draw the generalized block diagram of a digital data acquisition

system and explain. (8)

(ii) Explain the successive approximation method of A/D converter. (8)

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Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.

Third Semester



(Regulation 2008)


Answer ALL questions.

PART A — (10 × 2 = 20 marks)

1. List the functional elements of a measuring instrument.

2. What is drift?

3. How does one extend the range of ammeter and voltmeter?

4. Why do we do Ballistic tests?

5. What are the applications of dc potentiometer?

6. Which bridge is used to measure incremental inductance? Write the

expression.

7. How does dynamic scattering type LCD work?

8. What are the advantages of magnetic tape recorder?

9. List any four force summing devices.

10. Mention the need of ADC and DAC in Digital Data Acquisition System.

PART B — (5 × 16 = 80 marks)


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55353 2

11. (a) (i) Explain any four static characteristics of measuring

instruments.

(8)

(ii) How are errors classified? Explain systematic error. (8)

Or

(b) (i) Explain the classification of standards in detail. (8)

(ii) How are histogram and arithmetic mean helpful in the

statistical analysis of data? (8)

12. (a) (i) How to measure the power using instrument transformers?

Explain. (8)

(ii) How is multi-meter used to measure different parameters?

Explain.

(8)

Or

(b) (i) How do you determine the B-H curve using ‘step by step’

method?

(8)

(ii) What are the different methods used for the measurement of

frequency? Explain any one method. (8)

13. (a) (i) How does one measure the resistance using potentiometer? (8)

(ii) How do you measure the phase angle using ratio transformer? (8)

Or

(b) (i) Explain in detail the electro-static and electro—magnetic

interference. (8)

(ii) Mention the importance of Grounding. What are the different

grounding techniques used? (8)

14. (a) (i) Draw the block diagram X-Y Recorder and explain. (8)

(ii) Explain data loggers in detail. (8)

Or

(b) (i) Draw the internal block diagram of CRT and explain. (8)

(ii) Compare the features of FM recording with PDM recording. (8) 421 4

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15. (a) (i) Tabulate the principle of operation and typical application of

resistive, capacitive and inductive transducers. (8)

(ii) Why do we need to acquire data? What are the blocks involved

in digital DAQ system? (8)

Or

(b) (i) What is self generating transducer? Give two examples of self

generating transducers and explain its working principle. (8)

(ii) Explain the smart sensors in detail. (8)

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Documents

Question Paper Code : 31391 - Fmcetfmcet.in/EEE/EE6404_auque.pdf · (Common to PTEE 2201 Measurements and Instrumentation for B.E. (Part ... Write short notes on : (i) ... Grounding