Anna University Chennai 2008-6th Sem B.E Mechanical Engineering /B.Tech , IL/- ME1021-COMPUTER AIDED DESIGN - Question Paper

B.E/B.Tech. DEGREE EXAMINATION, APRIL/MAY-2008
Sixth Semester
Mechanical Engineering
ME1021-COMPUTER AIDED DESIGN

(REGULATION 2004)

Time: 3 hours Maximum:100marks

PART-A

1. Differentiate ranging from viewport and Windows
2. discuss the role of cad in the field of mechanical engineering
3. What is concatenated matrix? discuss with an example
4. discuss the common editing features available on a Cad system
5. List the advantages and disadvantages of a wire frame model.
6. List the factors that should satisfy the design of curved shapes
7. explain the need for standardization in computer graphics.
8. Compare CORE and GKS graphics standards.
9. Write short, notes on feature based modeling.
10. What is the importance of hidden line removal in 3-D modeling?




PART-B


11) (a) (i) what is design for manufacturability? explain the principles.
(ii) What is concurrent engineering? compare sequential engineering with
Concurrent engineering-Explain how the concurrent engineering is
Implemented.

Or
(b) List the different elements of interactive computer graphics system

12) (a) what is transformation? discuss different 2D and 3D transformations.

Or
(b) discuss the procedure to be followed for Bresenham’s circle algorithm

13) (a) compare the splines for the identical control points created by B-spline and Bezier
Spline techniques

Or
(b)(i) elaborate the common modeling techniques available for surface design in
Surface modeling
(ii) Briefly discuss the term Constructive Solid Geometry(CSG)

14) (a)(i) What is DXF file ? discuss the general DXF file structures
(ii) define the structure of an IGES file

Or
(b) write C/C++ programme to draw ellipse, arc and segment

15) (a) discuss the computer algorithms for shading and rendering

Or
(b) discuss in detail, the basics of tolerance representation and analysis

Earning:   Approval pending.