Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 6th Sem Old 161903 Computer Aided Design Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (Old) EXAMINATION ? WINTER 2019
Subject Code: 161903 Date: 04/12/2019
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 system with
CAD architecture.
07
(b) Enlist the various methods of geometric modeling. Discuss wire frame modeling in
detail.
07
Q.2 (a) (i) Explain IGES graphic standard
(ii) Draw and explain 2D element.
07
(b) Using DDA algorithm, find the Pixel value position of line between points (2,10) and
(6,15).
07
OR
(b) Write Bresenham?s line algorithm. Determine intermediate pixels for line starting from
(1, 1) to (9, 6).
07
Q.3 (a) A triangle ABC with vertices A(0,0), B(4,0) and C(2,3) is Translated through 4 and 4
units along X and Y directions respectively and then Rotated through 90
o
in
counterclockwise direction about the new position of point C. Find:
(1) The concatenated transformation matrix and
(2) The new position of triangle.
07
(b) State the properties of Hermite Cubic Splines. How these curves are differing from
Bezier curves?
07
OR
Q.3 (a) For ?ABC with coordinates A(5,5), B(8,5) and C(5,10), find new vertex position if it
reflected about a line y = 2x + 4.
07
(b) What are the major advantages and applications of B-Spline curves? 07
Q.4 (a) Explain ruled surface, surface of revolution and tabulated surface. 07
(b) Explain constrained based solid modeling with a neat sketch. 07
OR
Q.4 (a) Explain different types of analytical surfaces used in modeling. 07
(b) Explain Johnson method of optimum design with an example. 07
Q.5 (a) Classify optimization problems on various bases. 07
(b) A stepped shaft is as shown Fig. 1. Determine the stresses and deflections in each of
the sections. Assume uniform material for the complete shaft having a modulus of
elasticity as 200 GPa and axial force F as 35 KN.
07
OR
Q.5 (a) Discuss in detail about the applications of optimization in engineering. 07
(b) A system of springs is as shown in Fig.2. Determine the overall stiffness matrix and
determine the deflections of each of the springs.
07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (Old) EXAMINATION ? WINTER 2019
Subject Code: 161903 Date: 04/12/2019
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 system with
CAD architecture.
07
(b) Enlist the various methods of geometric modeling. Discuss wire frame modeling in
detail.
07
Q.2 (a) (i) Explain IGES graphic standard
(ii) Draw and explain 2D element.
07
(b) Using DDA algorithm, find the Pixel value position of line between points (2,10) and
(6,15).
07
OR
(b) Write Bresenham?s line algorithm. Determine intermediate pixels for line starting from
(1, 1) to (9, 6).
07
Q.3 (a) A triangle ABC with vertices A(0,0), B(4,0) and C(2,3) is Translated through 4 and 4
units along X and Y directions respectively and then Rotated through 90
o
in
counterclockwise direction about the new position of point C. Find:
(1) The concatenated transformation matrix and
(2) The new position of triangle.
07
(b) State the properties of Hermite Cubic Splines. How these curves are differing from
Bezier curves?
07
OR
Q.3 (a) For ?ABC with coordinates A(5,5), B(8,5) and C(5,10), find new vertex position if it
reflected about a line y = 2x + 4.
07
(b) What are the major advantages and applications of B-Spline curves? 07
Q.4 (a) Explain ruled surface, surface of revolution and tabulated surface. 07
(b) Explain constrained based solid modeling with a neat sketch. 07
OR
Q.4 (a) Explain different types of analytical surfaces used in modeling. 07
(b) Explain Johnson method of optimum design with an example. 07
Q.5 (a) Classify optimization problems on various bases. 07
(b) A stepped shaft is as shown Fig. 1. Determine the stresses and deflections in each of
the sections. Assume uniform material for the complete shaft having a modulus of
elasticity as 200 GPa and axial force F as 35 KN.
07
OR
Q.5 (a) Discuss in detail about the applications of optimization in engineering. 07
(b) A system of springs is as shown in Fig.2. Determine the overall stiffness matrix and
determine the deflections of each of the springs.
07
2
Fig.1. Fig.2.
*************
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This post was last modified on 20 February 2020