Question Paper: CAD / CAM / CIM Question Paper - May 2014 - Mechanical Engineering (Semester 7) - Mumbai University (MU)
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## CAD / CAM / CIM - May 2014

### MU Mechanical Engineering (Semester 7)

Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary
1 (a) Explain CAD tools required to support the different design phases 6 marks

1 (b) Explain the adaptive control system by explaining adaptive control constraint and adaptive control optimization. 6 marks

1 (c) A cubic Bezier curve is defined by the control points as (20, 20), (60, 80), (120,100) and (150, 30). Find the equation of the curve and Its mid point. 6 marks

2 (a) Write a part program using G and M codes to machine the contour as shown in Figure 1 and drill holes. The component is 18 mm thick. Assume
(i) Suitable tool
(ii) Suitable speed and feed for machining.
6 marks

2 (b) A rectangle ABCD has vertices A(1,1), B(2,1), C(2,3), DU ,3) . It has to to be rotated by 30° CCW about point P (3, 2). Determine: (i) the composite transformation matrix (ii) the new coordinates of rectangle. 6 marks

3 (a) Explain any one hidden line removal algorithm and explain how the algorithm determines which entities are hidden 6 marks

3 (b) Explain contact and non-contact inspection methods in Computer Aided Quality Control (CAQC) 6 marks

4 (a) Explain any two rapid prototyping processes 6 marks

4 (b) Write a complete APT program (geometric and motion commands) to machine the outline of the geometry as shown in Figure 2. Assume suitable data.
6 marks

5 (a) Write a program in object oriented language for 2D transformation which include functions for the following operations: (1) rotation @ x-axis (ii) scaling 6 marks

5 (b) Explain the CIM wheel with neat sketch along with the features and functioning of CIM systems 6 marks

6 (a) Explain pan classification and coding in Group Technology in detail 6 marks

6 (b) Explain similarity coefficient matrix 6 marks

6 (c) List benefits using Artificial Intelligence in CAPP system 6 marks

6 (d) Write short note on design for assembly 6 marks

### Write short note on (any two)

7 (i) Automated material handling system. 6 marks

7 (ii) Wire frame modelling 6 marks

7 (iii) Light and shade ray tracing 6 marks

7 (iv) 3D rotation transformation 6 marks

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