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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–IV • EXAMINATION – WINTER • 2014
Subject Code: 3341904 Date: 04-12-2014
Subject Name: Computer Aided Design
Time: 02:30 pm - 05:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.
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Q.1 Answer any seven out of ten. 14
1. Define CAD
2. State four advantages of CAD
3. State functional area of CAD
4. State types of geometrical transformations
5. Explain in short RAM and ROM
6. List different cords used in modern CAD workstation.
7. Draw Block diagram of CAD workstation
8. Give difference between 2-D and 3-D drawing
9. Write extension used for AutoCAD drawing file and Creo part file
10. Draw block diagram of design process with use of CAD
Q.2 (a) Write short note on Digitizer. 03
OR
(a) Write short note on 3D printer. 03
(b) Write basic specification required for computer system on which solid
modeling software like Creo/Unigraphics/Solidworks can be used. 03
OR
(b) State and write in brief on different Boolean operations used to create solid model. 03
(c) Differentiate between wire frame modeling, surface modeling and solid modeling. 04
OR
(c) State different methods of solid modeling and explain CSG with small example. 04
(d) One line having co-ordinate of end points (10, 5) and (15, 10) is rotated at an
angle 60 degree with respect to origin. Determine co-ordinates of transformed line. 04
OR
(d) Explain translation and scaling with respect to geometrical transformations. 04
Q.3 (a) Explain ‘EXTRUDE’ AutoCAD command with example and options. 03
OR
(a) Explain ‘REVOLVE’ AutoCAD command with example and options. 03
(b) Explain SOLVIEW command. 03
OR
(b) Explain SWEEP with example and syntax. 03
(c) Explain procedure to create assembly drawing in Creo/Unigraphics or
parametric solid modelling software you have used. 04
OR
(c) Explain procedure to create orthographic and sectional view in
Creo/Unigraphics or parametric software you have used. 04
(d) Explain feature used to create spring in Creo/Unigraphics or parametric software you
have used.04
have used.04
OR
(d) Explain Pattern feature used in Creo/Unigraphics or parametric software you have used. 04
Q.4(a)Explain word “feature based”, “parametric” and “associative” in context of solid modeling. 03
OR
(a) List important features of Creo or Unigraphics. 03
(b) Explain different constraint used for sketching in Creo/ Unigraphics. 04
OR
(b) Explain constraints used for Assembly in Creo/Unigrphics. 04
(c) Write procedure to reproduce part given in figure no.1 using Creo/Unigraphics. 07
Q.5 (a) Write command procedure to reproduce figure no.2 using AUTOCAD also show intermediate step with sketch and UCS position for that step. 10
(b) Explain REVSURF and TABSURF command with example. 04
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Figure 1 Q.4 C ALL DIMENSIONS ARE IN MM Assume suitable dimensions wherever necessary
Figure 2 Q.5 A ALL DIMENSIONS ARE IN MM Assume suitable dimensions wherever necessary
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