Answer all the questions.
PART-A(10*2=20)
1.      List the various stages in the life cycle of a product.
2.      What is the design process? Mention the steps involved in Shigley’s model for the design process.
3.      What are the limitations of Hermite curve?
4.      What are the advantage and disadvantage of wireframe modeling?
5.      What are the improvements brought by Gourand shading compared with other shading techniques?
6.      Mention the importance of coloring of three dimensional objects in computer graphics.
7.      What is meant by assembly modeling?

8.      What are the uses of tolerance stack-ups?
9.      What is the importance of standards in CAD?
10.  Write any three CAD standards for exchange of modeling data.
PART-B(5*16=80)
11.   (a). Write short notes on: (i) Design process (ii) CAD system architecture.
OR
 (b). What is meant by concurrent engineering? Describes the various schemes for concurrent engineering.
12.  (a). What are Bezier curves? Discuss its important properties.
OR
(b). What you understand by boundary representation technique of solid modeling? Explain briefly the data structure of B-rep solid model.
13.  (a). Explain the following color models used in computer graphics: (i)RGB  (ii)CMY
OR
(b). Write short notes on the following hidden surface algorithms: (i) Back-face removal   (ii) Z-buffer algorithm
14.  (a). Briefly explain the element of a mechanism analysis.
OR
(b). Write short note on: Statistical tolerance analysis.
15.  (a). Briefly explain any one of the known graphic standards.
OR

(b). Write short notes on: Drawing Exchange Format (DXF) standard.