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Reg. No. :
M.E. DEGREE EXAMINATION, JUNE 2010
First Semester
Computer Aided Design
CD9211 COMPUTER APPLICATIONS IN DESIGN
(Common to M.E. CAD/CAM/M.E. Engineering Design and
M.E. Product Design and Development)
(Regulation 2009)
Time : Three hours Maximum : 100 Marks
Answer ALL Questions
PART A (10 2 = 20 Marks)
1. What happens to the pictures that are too large to fit on the
screen?2. What is Bezier and B-spline curves?3. List down the
limitations of CAD software.4. What is the general structure of
program to solve design problems?5. What do you know about boundary
representation scheme?6. List down the importance of communication
standards in solid modeling.7. Mention the prismatic part creation
features.8. What is the principle behind visualization of parts?9.
What is important in mechanism simulation?10. Why is tolerance
analysis important in parts assembly?
PART B (5
16 = 80 Marks)11. (a) (i) What is meant by homogeneous
co-ordinate system for
transformations? What are its advantages? Explain. (8)
(ii) What is meant by composite transformations? How does it
achieved? Discuss. (8)
Or
Question Paper Code:J7629
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praveen kumar .A
praveen kumar .A
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J76292
(b) Explain the following :(i) World, screen and normalized
coordinates. (8)
(ii) 2D graphics primitives. (8)
12. (a) What are the steps in interactive programs to solve
design problems?Describe each step briefly. (16)
Or
(b) What are the issues involved in design of a story board
layout with
accompanying key frames for an animation of a single
polyhedron?
Discuss in detail. (16)
13. (a) (i) Make a note on sweep representations in solid
modeling. (8)(ii) Discuss the term Constructive Solid Geometry.
(8)
Or
(b) (i) Explain the consolidated features of data exchange
standards. (8)
(ii) Discuss the Boolean intersection operations with a block
and a
cylinder. (8)
14. (a) (i) Explain the depth-buffer (z-buffer) algorithm for
hidden surfaceremoval. (8)
(ii) Explain the procedure to compute the z-values in two
successive
locations in a scan-line and intersection positions on two
successive
scan lines. (8)
Or
(b) Write an algorithm for generating a quad tree representation
for the
visible surfaces of an object by applying the area subdivision
tests to
determine the values of the quad tree elements. (16)
15. (a) (i) Discuss the hidden features of assembly modeling
technique. (8)(ii) Explain the highlights of mass property
calculations relevant to
parts assembly. (8)
Or
(b) Discuss the sequential steps in mechanism simulation and its
important
features. (16)
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praveen kumar .A
praveen kumar .A
