GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER-VI (OLD) EXAMINATION - WINTER 2018
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Subject Code:161903 Date: 16/11/2018
Subject Name: Computer Aided Design
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.1 (a) | Distinguish between conventional design and computer aided design | 07 |
| Q.1 (b) | Explain the Frame buffer and resolution | 07 |
| Q.2 (a) | What is CAD work station? Explain specification | 07 |
| Q.2 (b) | Using DDA Algorithm and sketch the pixels for the line drawn from (2,3) to (8,6) | 07 |
| OR | ||
| Q.2 (b) | Explain scan conversing, also discuss breshnham’s circle algorithm | 07 |
| Q.3 (a) | Discuss rotation of line about any other point in space with neat sketch | 07 |
| Q.3 (b) | Explain in brief (i) PHIGS (ii) GKS | 07 |
| OR | ||
| Q.3 (b) | What is homogenous transformation? Explain its importance with suitable example | 07 |
| Q.4 (a) | Distinguish between B-Spline and Bezier curve | 07 |
| Q.4 (b) | What are the different surface modelling techniques? Explain any two in brief | 07 |
| OR | ||
| Q.4 (b) | What are the different solid modelling techniques? Explain any two in brief | 07 |
| Q.5 (a) | Show with neat sketch Mirroring and clipping | 07 |
| Q.5 (b) | What is mesh? What are the parameters required to consider before mesh generation. | 07 |
| Q.5 (a) | Determine the Displacements of the nodes and elemental stress for the bar as shown in below figure. Take A1 = A;=380mm?, Az = 480mm?, l1 =1, =180mm, I3:= 240mm, F1=F,=12kNand E = 180GPa. | 07 |
| Q.5 (b) | Explain classification of Optimization problems and their procedure. | 07 |
| Q.5 (b) | Drive the potential energy equation for the spring system shown in below figure. Determine the displacements of nodes of the same using the minimum potential energy principle. Consider: ki1 = ka2 = 40N/mm. k3 = 60N/mm, ka = 9ON/mm, F, = 100N and F3 = 60N | 07 |
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