Download GTU BE/B.Tech 2018 Winter 6th Sem New 2162006 Computer Aided Design For Mechatronics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018

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Subject Code:2162006 Date:30/11/2018
Subject Name:Computer Aided Design for Mechatronics
Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Give Specification of Workstations. 03
(b) Differentiate between Vector display and Raster display. 04

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(c) Explain Bresenham’s algorithm for generation of line and also 07
write down advantage of Bresenham’s algorithm.

Q.2 (a) Explain the Working of Digitizers. 03
(b) State the advantages of computer aided design. 04
(c) What is Graphic Standard? Enlist them. Explain any one of them. 07

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OR
(c) Explain the following two-dimensional geometric transformation: 07
(1) Translation (2) Rotation (3) Scaling (4) Reflection

Q.3 (a) A triangle A(1,1), B(3,3) & C(4,1) is to be translated by 4 units in 03
X-direction and 2 units in Y-direction.

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(b) Define Topology & Geometry. 04
(c) A rectangle ABCD has vertices A(10,15), B(25,15), C(25,25) and 07
D(10,25). This rectangle is to be reflected about a line P(25,20) and
Q(10,30). Determine the vertices of transformed rectangle.
OR

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Q.3 (a) Explain sweeping for the representation of solid models. 03
(b) State the advantages and disadvantages of CSG representation 04
(c) Perform a 45° rotation of-a triangle A(0,0), B(1,1), C(5,2) 07
(1). About the origin and (2). About the point P(-1, -1).

Q.4 (a) What do you mean by Subsidiary design equation? 03

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(b) Explain B-rep approach of solid modeling in detail 04
(c) A cubic spline curve has start point PO (16,0) and end point P1(3,1). 07
The tangent vector for end PO is given by line joining PO and point
P2(14,8). Tangent vector for end P1 is given by line joining P2 and
point P1. Determine the parametric equation for hermit cubic curve.

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OR

Q4 (a) What are Geometric transformations? State any two advantages of 03
Homogenous coordinate transformations.
(b) Explain the types of geometric models. 04
(c) What is design optimization? Explain its application in engineering 07

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design.

Q.5 (a) Explain following entities used in surface modeling. 03
1) Plain surface ii) coons patch.
(b) Explain properties of Bezier Curve. 04
(c) Coordinates of four data point PO, P1,P2 & P3 are(2,2,0), (2,3,0), 07

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(3,3,0) & (3,2,0) respectively. Find the equation of bazier curve and
determine the coordinates of point on curve for u=0,0.25,0.5,0.75 &
1.0.

OR

Q.5 (a) Comparison of Analytic curves & Synthetic curve. 03

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(b) Comparison of Wire—frame modeling & solid modeling. 04
(c) Classification of optimization problems on various basis. 07