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DIPLOMA ENGINEERING - SEMESTER–IV • EXAMINATION – WINTER - 2016
Subject Code: 3341904 Date: 24- 11-2016
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.
4.Use of programmable & Communication aids are strictly prohibited.
5.Use of only simple calculator is permitted in Mathematics.
6.English version is authentic.
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1.Enlist various input and output devices for CAD workstation
2.Enlist various CAD software packages for modeling.
3.List any four file extensions used in various CAD software.
4.Explain in brief RAM and ROM
5.Write the full form of GUI, CADD, CSG , B-rep.
6.List any four assembly constraints used in parametric modeling.
7.State any four advantages of CAD system.
8.Enlist any four commands used for surface modeling in AutoCAD.
9.Draw block diagram of design process with use of CAD.
10.Explain in brief REVSURF command used in AutoCAD.
Q.2 (a) Explain 2D translation with suitable illustration 03
OR
(a) Explain 2D scaling with suitable illustration 03
(b) Define CAD and enlist its functional area. 03
OR
(b) Explain UCS in context of AutoCAD. 03
(c) Prepare sample specifications / configuration of computer system suitable forsolid
modeling CAD software. 04
OR
(c) Draw the block diagram of CAD work station and explain in brief. 04
(d) Explain Feature based modeling. 04
OR
(d) Write short note on constructive solid geometry (CSG) method of modeling. 04
Q.3 (a) Differentiate between surface modeling and solid modeling. 03
OR
(a) Explain parametric modeling in brief. 03
(b) Differentiate between 2D and 3D models. 03
OR
(b) Explain Boolean operation in AutoCAD (1)Union (2) subtract 03
(c) Explain AutoCAD commands (1)box (2) cylinder 04
OR
(c) Explain AutoCAD commands (1)3D Rotate (2) 3D Mirror 04
(d) Enlist various constraints used in parametric sketching. Explain any two. 04
OR
(d) Enlist types of printers. Explain 3-D printer. 04
Q.4 (a) Discuses steps to create solid model shown in Figure-1 in any parametric modeling
software. Write name of software. 10
(b) Explain features of any one of parametric modeling CAD software. 04
OR
(b) List benefits of Assembly Modeling in parametric modeling software. 04
Q.5 (a) Write AUTOCAD detailed procedure with commands to prepare 3D modelgiven in figure-2. Show intermediate sketches with UCS position. 14
Figure-2 - Que: 5(a)
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