Question Bank CAD/CAM Q
MCQ’s (1 Mark Each) i) Digitizer is constructed on the basis of:
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(a) Magnetic tablet mechanism (b) Acoustic tablet mechanism ii)
(c) Optical tablet mechanism (d) both (a) and (b) Light pen is a:
iii)
(a) Writing device (b) Drawing device (c) Locating device (d) Lighting device Color raster display uses three electron guns. namely: (a)Red. green and blue (b) Red, green and yellow
Q Q
iv) v)
(c) White, blue and black (d) Red, black and white Write Full form of CAD, CAM, CAE, CAQC, CAPP, CIM ------ is an image generation technique:
a) b) a) b)
(a)stroke writing (b) Tablet Pen (c)Scalar writing(d) None of these Elaborate stages in the development of CAD/CAM. Write note on Hardware in CAD Discuss the importance of geometric transformations in computer graphics Write note on Homogeneous coordinates
Q Write the machining codes for following machining operations (MCQ) A. 1
For Rapid Travel - a. G00
b.G33
c. G44
d.
G01. 2 D0 loop-
a. G24
b. G25
c.G22
d.
G23 3 Tool change-
a.M04
b.M06
c.M05
d.
c.M05
d.
M08 4 Spindle anticlockwise and coolant on a.M14 b.M16 5 G. Tool change. a.M04 M08
c.M21
d.M13 b.M06
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6 4 6 4
Question Bank CAD/CAM Q Following questions carry 1 mark each
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B. A. The device used to read the NC systems is called______ a) Scanner
b) Punch tape
c) Flexowriter
reader d) Collator
B. Flexible Automation is also called as___ a) Soft automation
b) Hard
c) Fixed automation
automation d) Rigid
automation C. In CNC programming, the codes for angular dimensions around x,y,z axes are___ a) A,B,C c) I,J,K
b) U,V,W d) L,M,N
D. Multiple pallets are used in CNC machine tools, basically for____ a) Increasing the cost of machine
b) Ease of handling the
c) Increasing machine utilization
job d) All of these
E. The miscellaneous function words consist of _____ digits a) one
b) two
c) three
d) four
Q Write the CNC part program for the component given fig-2. Provide the a) details on tools, operation sequence and processes. Assume suitable data and
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Question Bank CAD/CAM Mention clearly.
b) Discuss the role of servomotors in CNC
4
Q Discuss the structure and drives in VMC with a sketch.
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a) b) Elaborate the importance of tool magazine and ATC
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Q.4 Explain in detail adaptive control of CNC machine tools a) b) Explain with neat sketch different tool holding devices on CNC machines Q.5 Write short notes (on any 3) a) Tool setting
6 4 8
d)
Absolute and incremental
b) Canned cycles
e)
programming DNC
c) Modular tooling
f)
Punch-tape and tape reader
Q
Write the machining codes for following machining operations (MCQ)
10M
Question Bank CAD/CAM A. For Rapid Travel -
a. G00 b.G33 c. G44 d. G01.
B.D0 loop-
a. G24
c.G22 a. G17
d. G23 b.G04
C. Tool Length offset value c. G10
d.G18
D. References Point Return
Check.
a. G27
E. Inch Programming.
c.G20
d.G26
b.G71
c.G69
F. End of program
a.M00
b.M01
c.M02
d.M04
a.M04
b.M06
c.M05
d. M08
coolant on
G. Tool change. H. Spindle anticlockwise and a.M14
I. Absolute positioning b.G84
c.G91
d.G90
b.M31
c.M27
d.M32.
J. End of Tape a.M30
b.G13 a.G70
d.G72
a.G18
b. G25
b.M16
c.M21
d.M13\
Question Bank CAD/CAM A.
Write a manual program for drilling holes as shown in
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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-2
B.
Write the CNC part program for the component given fig-
8M
2. Provide the details on tools, operation sequence and processes. Assume suitable data and Mention clearly.
Fig-2
Q. Attempt following 1. Define Automation? What are its types? 2. What is Group technology? What are its advantages & disadvantages 3. Explain FMS? Describe its elements & merits and demerits of FMS 4. Explain CIM. 5. Write a note on – concept of machine cell
Q
4 5 8 4 4
MCQ 1)
Tablet Pen is an____device
4 a Display
b Output
c Input
d All of above
Question Bank CAD/CAM devices 2)
In CAD Computers are needed
a Modification of
for___
Q.
b
Optimization of design
design
3)
What is long form of CAQC, CAPP, CIM, CAE, PLC, CATIA
a)
Explain various functions of Graphic Software
4
b)
What is GT? Explain any two of them.
4
c)
Elaborate the stages in the development of CAD/CAM
4
d)
Write Short Note on
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2 Homogeneous co-ordinate
Q. A. 1 2 3 4
1 Hardware in CAD 3
Advantages & Disadvantages of CAD/CAM System
Write the machining codes for following machining operations (MCQ) For Rapid Travel - a. G00 b.G33 c. G44 d. G01. D0 loopa. G24 b. G25 c.G22 d. G23 Tool changea.M04 b.M06 c.M05 d. M08 Spindle anticlockwise and coolant on
a.M14 b.M16 c.M21 d.M13 5 G. Tool change. a.M04 b.M06 c.M05 d. M08 Q.1B. Following questions carry 1 mark each A. The device used to read the NC systems is called______ e) Scanner f) Punch tape reader g) Flexowriter h) Collator B. Flexible Automation is also called as___ e) Soft automation f) Hard automation g) Fixed automation h) Rigid automation C. In CNC programming, the codes for angular dimensions around x,y,z axes are___ e) A,B,C f) U,V,W
5
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Question Bank CAD/CAM g) I,J,K h) L,M,N D. Multiple pallets are used in CNC machine tools, basically for____ e) Increasing the cost of machine f) Ease of handling the job g) Increasing machine utilization h) All of these E. The miscellaneous function words consist of _____ digits e) one f) two g) three h) four Q.2 a) Write the CNC part program for the component given fig-2. Provide the details on tools,
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operation sequence and processes. Assume suitable data and Mention clearly.
b) Discuss the role of servomotors in CNC
Q.3 a) b) Q.4 a) b) Q.5 a) b) c)
Discuss the structure and drives in VMC with a sketch. Elaborate the importance of tool magazine and ATC Explain in detail adaptive control of CNC machine tools Explain with neat sketch different tool holding devices on CNC machines Write short notes (on any 3) Tool setting d) Absolute and incremental programming Canned cycles e) DNC Modular tooling f) Punch-tape and tape reader
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6 4 6 4 8
Question Bank CAD/CAM 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