Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 6th Sem Old 161903 Computer Aided Design Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI (OLD) EXAMINATION ? WINTER 2018
Subject Code:161903 Date: 16/11/2018
Subject Name: Computer Aided Design
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Distinguish between conventional design and computer aided design 07
(b)
Explain the Frame buffer and resolution
07
Q.2 (a) What is CAD work station? Explain specification 07
(b)
Using DDA Algorithm and sketch the pixels for the line drawn from (2,3) to (8,6)
07
OR
(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
(b)
Explain in brief (i) PHIGS (ii) GKS
07
OR
Q.3 (a) What is homogenous transformation? Explain its importance with suitable example 07
(b) Distinguish between B-Spline and Bezier curve 07
Q.4 (a) What are the different surface modelling techniques? Explain any two in brief 07
(b) Discuss Rotational and Translational Mapping 07
OR
Q.4 (a) What are the different solid modelling techniques? Explain any two in brief 07
(b) Show with neat sketch Mirroring and clipping 07
Q.5 (a) What is mesh? What are the parameters required to consider before mesh
generation.
07
(b) Determine the Displacements of the nodes and elemental stress for the bar as
shown in below figure. Take A 1 = A 2 = 380mm
2
, A 3 = 480mm
2
,
l 1 = l 2 = 180mm, l 3 = 240mm,
F 1 = F 2 = 12kN and E = 180GPa.
Figure Q.5(b)
07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI (OLD) EXAMINATION ? WINTER 2018
Subject Code:161903 Date: 16/11/2018
Subject Name: Computer Aided Design
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Distinguish between conventional design and computer aided design 07
(b)
Explain the Frame buffer and resolution
07
Q.2 (a) What is CAD work station? Explain specification 07
(b)
Using DDA Algorithm and sketch the pixels for the line drawn from (2,3) to (8,6)
07
OR
(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
(b)
Explain in brief (i) PHIGS (ii) GKS
07
OR
Q.3 (a) What is homogenous transformation? Explain its importance with suitable example 07
(b) Distinguish between B-Spline and Bezier curve 07
Q.4 (a) What are the different surface modelling techniques? Explain any two in brief 07
(b) Discuss Rotational and Translational Mapping 07
OR
Q.4 (a) What are the different solid modelling techniques? Explain any two in brief 07
(b) Show with neat sketch Mirroring and clipping 07
Q.5 (a) What is mesh? What are the parameters required to consider before mesh
generation.
07
(b) Determine the Displacements of the nodes and elemental stress for the bar as
shown in below figure. Take A 1 = A 2 = 380mm
2
, A 3 = 480mm
2
,
l 1 = l 2 = 180mm, l 3 = 240mm,
F 1 = F 2 = 12kN and E = 180GPa.
Figure Q.5(b)
07
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OR
Q.5 (a) Explain classification of Optimization problems and their procedure. 07
(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: k 1 = k 2 = 40N/mm. k 3 = 60N/mm, k 4 = 90N/mm, F 2 = 100N and F 3 = 60N
Figure Q.5(b)
07
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This post was last modified on 20 February 2020