Question Bank CAD/CAM
QMCQs (1 Mark Each)5
i)Digitizer is constructed on the basis of:
(a) Magnetic tablet mechanism (b) Acoustic tablet mechanism
(c) Optical tablet mechanism (d) both (a) and (b)
ii)Light pen is a:
(a) Writing device (b) Drawing device (c) Locating device (d)
Lighting device
iii)Color raster display uses three electron guns. namely:
(a)Red. green and blue (b) Red, green and yellow
(c) White, blue and black (d) Red, black and white
iv)Write Full form of CAD, CAM, CAE, CAQC, CAPP, CIM
v)------ is an image generation technique:(a)stroke writing (b)
Tablet Pen (c)Scalar writing(d) None of these
Qa)Elaborate stages in the development of CAD/CAM.6
b)Write note on Hardware in CAD4
Qa)Discuss the importance of geometric transformations in
computer graphics6
b)Write note on Homogeneous coordinates 4
Q A.Write the machining codes for following machining operations
(MCQ) 5
1 For Rapid Travel - a. G00 b.G33 c. G44 d. G01.
2D0 loop- a. G24 b. G25
c.G22
d. G23
3Tool change- a.M04
b.M06
c.M05
d. M08
4Spindle anticlockwise and coolant on a.M14
b.M16
c.M21
d.M13
5G. Tool change. a.M04
b.M06
c.M05
d. M08
Q
B.Following questions carry 1 mark each5
A.The device used to read the NC systems is called______
a) Scannerb) Punch tape reader
c) Flexowriterd) Collator
B.Flexible Automation is also called as___
a) Soft automationb) Hard automation
c) Fixed automationd) Rigid automation
C.In CNC programming, the codes for angular dimensions around
x,y,z axes are___
a) A,B,Cb) U,V,W
c) I,J,Kd) L,M,N
D.Multiple pallets are used in CNC machine tools, basically
for____
a) Increasing the cost of machineb) Ease of handling the job
c) Increasing machine utilization d) All of these
E.The miscellaneous function words consist of _____ digits
a) oneb) two
c) threed) four
Q a)Write the CNC part program for the component given fig-2.
Provide the details on tools, operation sequence and processes.
Assume suitable data and Mention clearly.8
b)Discuss the role of servomotors in CNC4
Q a)Discuss the structure and drives in VMC with a sketch.6
b)Elaborate the importance of tool magazine and ATC4
Q.4 a) Explain in detail adaptive control of CNC machine
tools6
b)Explain with neat sketch different tool holding devices on CNC
machines4
Q.5Write short notes (on any 3)8
a)Tool settingd)Absolute and incremental programming
b)Canned cyclese)DNC
c)Modular toolingf)Punch-tape and tape reader
Q Write the machining codes for following machining operations
(MCQ) 10M
A. For Rapid Travel - a. G00 b.G33 c. G44 d. G01. B.D0 loop- a.
G24b. G25
c.G22
d. G23 C. Tool Length offset value a. G17
b.G04
c. G10
d.G18 D. References Point Return Check. a. G27
b.G13
c.G20
d.G26 E. Inch Programming. a.G70
b.G71
c.G69
d.G72 F. End of program a.M00
b.M01
c.M02
d.M04 G. Tool change. a.M04
b.M06
c.M05
d. M08 H. Spindle anticlockwise and coolant on a.M14
b.M16
c.M21
d.M13\
I. Absolute positioning
a.G18
b.G84
c.G91
d.G90
J. End of Tape -
a.M30
b.M31
c.M27
d.M32.A.Write a manual program for drilling holes as shown in
fig.1. The spindle is initially positioned at the lower left corner
of the job. The actual drilling once position is achieved manually
by the operator. Fig-27M
B.Write the CNC part program for the component given fig-2.
Provide the details on tools, operation sequence and processes.
Assume suitable data and Mention clearly.Fig-28M
Q. Attempt following
1.Define Automation? What are its types?4
2.What is Group technology? What are its advantages &
disadvantages5
3.Explain FMS? Describe its elements & merits and demerits
of FMS8
4.Explain CIM.4
5.Write a note on concept of machine cell4
QMCQ4
1)Tablet Pen is an____deviceaDisplay devicesbOutputcInputdAll of
above
2)In CAD Computers are needed for___aModification of
designbOptimization of design
3)What is long form of CAQC, CAPP, CIM, CAE, PLC, CATIA
Q.a)Explain various functions of Graphic Software4
b)What is GT? Explain any two of them.4
c)Elaborate the stages in the development of CAD/CAM4
d)Write Short Note on 1Hardware in CAD9
2Homogeneous co-ordinate3Advantages & Disadvantages of
CAD/CAM System
Q. A.Write the machining codes for following machining
operations (MCQ) 5
1 For Rapid Travel - a. G00 b.G33 c. G44 d. G01.
2D0 loop- a. G24 b. G25
c.G22
d. G23
3Tool change- a.M04
b.M06
c.M05
d. M08
4Spindle anticlockwise and coolant on a.M14
b.M16
c.M21
d.M13
5G. Tool change. a.M04
b.M06
c.M05
d. M08
Q.1B.Following questions carry 1 mark each5
A.The device used to read the NC systems is called______
e) Scannerf) Punch tape reader
g) Flexowriterh) Collator
B.Flexible Automation is also called as___
e) Soft automationf) Hard automation
g) Fixed automationh) Rigid automation
C.In CNC programming, the codes for angular dimensions around
x,y,z axes are___
e) A,B,Cf) U,V,W
g) I,J,Kh) L,M,N
D.Multiple pallets are used in CNC machine tools, basically
for____
e) Increasing the cost of machinef) Ease of handling the job
g) Increasing machine utilization h) All of these
E.The miscellaneous function words consist of _____ digits
e) onef) two
g) threeh) four
Q.2 a)Write the CNC part program for the component given fig-2.
Provide the details on tools, operation sequence and processes.
Assume suitable data and Mention clearly.8
b)Discuss the role of servomotors in CNC4
Q.3 a)Discuss the structure and drives in VMC with a
sketch.6
b)Elaborate the importance of tool magazine and ATC4
Q.4 a) Explain in detail adaptive control of CNC machine
tools6
b)Explain with neat sketch different tool holding devices on CNC
machines4
Q.5Write short notes (on any 3)8
a)Tool settingd)Absolute and incremental programming
b)Canned cyclese)DNC
c)Modular toolingf)Punch-tape and tape reader
All Questions asked in Nov 2009/May 2010/Nov2010/May 2011/Nov
2011/May 2012/Nov 2012/May 2013/Nov2013 Given most probable
questions and MCQs
