Winter 2016 Computer Aided Design Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
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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Q.1 Answer any seven out of ten. 14

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-1 - Que: 4(a)

Figure-2 - Que: 5(a)

                                         

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Summer 2016 Computer Aided Design Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER –IV • EXAMINATION – SUMMER 2016
Subject Code: 3341904 Date: 20- 05-2016
Subject Name: COMPUTER AIDED DESIGN (CAD)
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)

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Q.1 Answer any seven out of ten.  14

1. Write full form of USB, DVD, EPROM, and CAE.

2. Define CAD and CAM.

3. Write name of any four Input devices used for CAD workstation.

4. Write any four Output devices used for CAD workstation.

5. Write the name of any four printers.

6. Explain AutoCAD “UNION” command with suitable example.
.
7. Write any two differences between 2-D drawing and 3-D drawing.

8. Explain AutoCAD “3D ARRAY” command with suitable example.

9. Explain AutoCAD “BOX” command with suitable example.

10. Write name of any four parametric modeling software.

Q.2 (a) Explain any six computer graphics terminology in brief. 03

OR

(a) Write any six main applications of CAD system. 03

(b) Explain design steps in CAD process with suitable diagram. 03

OR

(b) Draw the block diagram of CAD work station. 03


(c) Write types of 2D- geometrical transformation and explain any one in brief. 04

OR

(c) Define geometrical transformation. A line having end coordinates (3,3) and (4,6) is rotate by 30 degree with respect to origin. Find out coordinates of final position of the line. Draw the necessary sketch of line. 04

(d) Write types of coordinate system. Explain any one in brief. 04

OR

(d) Explain CSG (Constructive Solid Geometry) modeling method with suitable example. 04

Q.3 (a) Write the six main specifications of CAD workstation in your CAD laboratory. 03

OR

(a) Write differences between wire frame modeling, surface modeling and solid modeling( any three points) 03

(b) Define parametric modeling and write any two benefits of parametric modeling. 03

OR

(b) Write any three differences between parametric modeling and non parametric modeling with CAD software. 03

(c) State and explain any four options of UCS command in AutoCAD with figure 04

OR

(c) Write the steps to prepare AutoCAD 3D model drawing of the given figure 1. Specify the name of command, option and position of UCS. 04

(d) Write the commands to prepare AutoCAD 3D drawing of the given figure 2. Specify the name of command, option and position of UCS. 04

OR

(d) Explain any four 2D commands used in AutoCAD with suitable example. 04

Q.4 (a) Explain AutoCAD surface modeling command REVSURF, TABSURF and RULE SURF with suitable example. 03

OR

(a) Explain AutoCAD command CYLINDER, LOFT and SLICE with suitable example. 03

(b) Write any four importance features of Creo software. 04

OR

(b) Write any four importance features of Unigraphics software. 04

(c) Explain the procedure for making a 3D solid model Fig 1. in any one parametric solid modeling software. 07

Q.5 (a) Write any four importance features of Solid Edge or Inventor software. 04

(b) Explain the procedure for making a 3D solid model Fig 2. in any one parametric solid modeling software. 04

(c) Explain Extrude and Sweep command used in AutoCAD with sketch. 03

(d) Explain any three important constrains used in Creo or Unigraphics modeling software. 03

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FIGURE 1

FIGURE 2

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Computer Aided Design previous year question paper | 3341904 |

What advantage can you take with gtu previos Exam Papers?

Exams appear to be a mystery to most students but some may find it exciting by looking at it as a competition. They pray about having a perfect dream about the coming test so that they already know it but that is not a reality truth is if you wants to succeed you have to prepare well for the exams.

Studying past papers are a valuable part of exam preparation and help keep revision focused on important themes whilst practicing exam style questions.

One of the simplest ways to prepare for the exams is to manage your study according to a well-defined time table and allot time to every subject. It is a good practice to compare the questions of the examiners because it will give a better idea about what the examiner is looking for in the exam.

 Technique for Studying gtu previos Exam Papers

Most of the universities keep copies of the past exams in their libraries or they can also be accessed from the university websites available on the internet. A good practice is to take past five year papers and, instead of going through the past exam paper year by year, find questions about the same topic and prepare that topic really well. This technique can be very helpful for preparing the exam.

Advantages of Studying gtu previos Exam Papers

One of the most important part of exam preparation is going through past exams. It is important  to revise your entire syllabus quickly. They can provide you the general idea of the upcoming paper and you could easily guess the important topics of a particular subject. Past exam papers give you the idea of number of questions and the available choices. It is therefore necessary for students to give some time to go through the past paper while revising a subject.

Past exam papers are one of the most helpful tools available to prepare for both internal and external examinations as they provides students with practical insight into how the forthcoming exam paper is likely to look and the key themes or subject areas most likely to be covered. Before starting revision for a subject it is always worth taking time to seek out past papers.

Winter 2014 Computer Aided Design Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY

Diploma Engineering - SEMESTER–IV • EXAMINATION – WINTER • 2014

Subject Code: 3341904 Date: 04-12-2014

Subject Name: Computer Aided Design

Time: 02:30 pm - 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. English version is considered to be Authentic.

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Q.1 Answer any seven out of ten. 14

1. Define CAD

2. State four advantages of CAD

3. State functional area of CAD

4. State types of geometrical transformations

5. Explain in short RAM and ROM

6. List different cords used in modern CAD workstation.

7. Draw Block diagram of CAD workstation

8. Give difference between 2-D and 3-D drawing

9. Write extension used for AutoCAD drawing file and Creo part file

10. Draw block diagram of design process with use of CAD

Q.2 (a) Write short note on Digitizer. 03

OR

(a) Write short note on 3D printer. 03

(b) Write basic specification required for computer system on which solid

modeling software like Creo/Unigraphics/Solidworks can be used. 03

OR

(b) State and write in brief on different Boolean operations used to create solid model. 03

(c) Differentiate between wire frame modeling, surface modeling and solid modeling. 04

OR

(c) State different methods of solid modeling and explain CSG with small example. 04

(d) One line having co-ordinate of end points (10, 5) and (15, 10) is rotated at an

angle 60 degree with respect to origin. Determine co-ordinates of transformed line. 04

OR

(d) Explain translation and scaling with respect to geometrical transformations. 04

Q.3 (a) Explain ‘EXTRUDE’ AutoCAD command with example and options. 03

OR

(a) Explain ‘REVOLVE’ AutoCAD command with example and options. 03

(b) Explain SOLVIEW command. 03

OR

(b) Explain SWEEP with example and syntax. 03

(c) Explain procedure to create assembly drawing in Creo/Unigraphics or

parametric solid modelling software you have used. 04

OR

(c) Explain procedure to create orthographic and sectional view in 

Creo/Unigraphics or parametric software you have used. 04

(d) Explain feature used to create spring in Creo/Unigraphics or parametric software you
have used.04

OR

(d) Explain Pattern feature used in Creo/Unigraphics or parametric software you have used. 04

Q.4(a)Explain word “feature based”, “parametric” and “associative” in context of solid modeling. 03

OR

(a) List important features of Creo or Unigraphics. 03

(b) Explain different constraint used for sketching in Creo/ Unigraphics. 04

OR

(b) Explain constraints used for Assembly in Creo/Unigrphics. 04

(c) Write procedure to reproduce part given in figure no.1 using Creo/Unigraphics. 07

Q.5 (a) Write command procedure to reproduce figure no.2 using AUTOCAD also show intermediate step with sketch and UCS position for that step. 10

(b) Explain REVSURF and TABSURF command with example. 04

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Figure 1 Q.4 C ALL DIMENSIONS ARE IN MM Assume suitable dimensions wherever necessary

Figure 2 Q.5 A ALL DIMENSIONS ARE IN MM Assume suitable dimensions wherever necessary

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Summer 2014 Computer Aided Design Question Paper

                                                                      ************ 

GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING –IV SEMESTER – • EXAMINATION – SUMMER 2014
Subject Code: 3341904 Date: 31/05/2014
Subject Name: Computer Aided Design
Time:10:30 am – 1:00 pm Total Marks: 70

Instructions:
1. Attempt all five questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
'

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Q.1 (a) Define CAD. State functional areas of CAD. 07

(b) Explain CAD workstation with block diagram and enlist types of input and
output devices.07

Q.2 (a) Define transformation. Explain 2D translation with suitable example. 07

(b) Explain parametric ,non parametric and feature based modeling 07

OR

(b) Explain GKS and IGES graphic standard. 07

Q.3 (a) Write down AUTOCAD commands along with sketch and UCS position to
generate 3D model for a given component in fig.1. 10

(b) Explain following AUTOCAD commands with suitable example
(i)3D ARRAY (ii)SLICE (iii) 3D ROTATE (iv) 3D MIRROR 04

OR

Q.3 (a) Write down AUTOCAD commands along with sketch and UCS position to
generate 3D model for a given component in fig. 2. 10

(b) Explain following AUTOCAD surface modeling commands with suitable example
(i)REVSURF (ii)TABSURF (iii) RULE SURF (iv) EDGE SURF 04

Q.4 (a) Explain following AUTOCAD commands with suitable example
(i)WEDGE (ii) BOX (iii) REVOLVE (iv) EXTRUDE.07

(b) LIST the Parametric CAD softwares & explain features of CREO. 07

OR

Q. 4 (a) Explain following AUTOCAD commands with suitable example
(i)CYLINDER(ii)TORUS (iii) SWEEP (iv) LOFT 07

(b) Explain sketching overview of Solidedge/Catia/ CREO with suitable example. 07

Q.5 (a) Give introduction to 3d working plane & model tree of parametric software. 04

(b) Write down solid modeling creation procedure of fig.3 using CREO/solid edge. 10

OR

Q.5 (a) Write down for view generation in parametric modeling software.( CREO
/solid edge) 04

(b) Write down solid modeling creation procedure of fig.4 using
Inventor/Unigrapics. 10

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Q.3 Fig.1

Q.3 Fig.2

Q.5 Fig.3

Q.5 Fig.4

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Summer 2015 Computer Aided Design Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–IV • EXAMINATION – SUMMER • 2015
Subject Code: 3341904 Date: 12-05-2015
Subject Name: Computer Aided Design
Time: 10:30 am - 01:00 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.

***************

Q.1 Answer any seven out of ten. 14

1. List any four file format with extension for CAD software.

2. Name full form of (1) ROM (2) PROM (3) EPROM (4) EEPROM.

3. List any four types of graphic terminal with full name.

4. Name any Four Parametric software.

5. Write full name of (1) CSG (2) B-rep.

6. List options of HATCH command.

7. Name commands for Boolean operation in AutoCAD.

8. List any Four 3D Primitives with its parameter
.
9. Name any Four 3D Modify commands in AutoCAD

10. Name any Four Assembly Constraints.

Q.2 (a) Draw flow chart for Design Procedure with Aid of Computer. 03

OR

(a) Explain benefits of CAD system. 03

(b) Draws Block diagramme of CAD Work Station. 03

OR

(b) Explain Function of CAD Work Station. 03

(c) List and explain Co-ordinate system in Computer Graphics. 04

OR

(c) What is Transformation? Explain “2D Rotation” with suitable example. 04

(d) State the difference between 2D and 3D model. 04

OR

(d) Explain Feature Based Modeling with suitable example. 04

Q.3 (a) Explain Wire Frame Model. 03

OR

(a) Explain Surface Model. 03

(b) Compare Model Space and Paper Space in AutoCAD. 03

OR

(b) Explain Elevation and Thickness commands with suitable example. 03

(c) State and explain various options of UCS command with figure. 04

OR

(c) Explain with example (1) 3D Array (2) 3D Mirror. 04

(d) State and explain various options of 3DVIEWS command with figure. 04

OR

(d) Explain with example (1) 3D-Orbit (2) Region 04

Q.4 (a) What are the Features of Solid Edge? 03

OR

(a) What are the Features of Inventor? 03

(b) List benefits of Assembly Modeling. 04

OR

(b) List and explain Design Approaches in Assembly Modeling. 04

(c) Explain with Example: (1) RULESURF (2)TABSURF (3) REVSURF 07

Q.5 (a) Discuses steps to create solid model shown in Fig: 1 in any parametric modeling software.                  Write down name of software clearly. 14

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Figure 1

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Winter 2015 Computer Aided Design Question Paper

 ***************

GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – IV-EXAMINATION – WINTER 2015
Subject Code: 3341904 Date: 05/12/2015
Subject Name: Computer Aided Design
Time: 10:30 AM TO 1:00 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.

***************

Q.1 Answer any seven out of ten.  14

1.List four uses of Computer graphics Technology.

2.Write the definition and concept of CAD.

3.Explain Two dimensional Scaling.
.
4.State the different types of Geometrical modeling.

5.Draw the block diagram of CAD workstation.

6.Explain UCS.

7.List the operation covered in Pro-E.

8.Define “Parametric Feature Based Modeling”.

9.Write some feature of Sold Edge.

10.Write the full form of HTML, CAE, PROM and CAM.

Q.2 (a) Define CAD and write any five advantages of CAD system. 03

OR

(a) List at least six functional area of CAD. 03

(b) Write the reasons for implementing CAD system. 03

OR

(b) Enlist any six output devices with their applications. 03

(c) Using suitable illustration, explain 2D transformation. 04

OR

(c) Define computer graphics. How it is beneficial to CAD. 04

(d) Explain following terms (1) Pixel (2) Resolution (3) GUI (4) Frame buffer. 04

OR

(d) Enlist types of printers. List advantages and disadvantages of any one. 04

Q.3(a)Differentiate between wire frame, surface and solid modeling. 03

OR

(a) Differentiate 2D modeling and 3D modeling with example. 03

(b) Explain parametric modeling in brief. Explain its application. 03

OR

(b) Write short note on Constructive Solid-Geometry Methods (CSG) of modeling. 03

(c) Explain the different graphics packages used for modeling. 04

OR

(c) Explain different coordinate system in AutoCAD with suitable example. 04

(d) Explain any four command used for surface modeling in AutoCAD. 04

OR

(d) Explain CAD 3D Primitives and its defining parameters in brief for SPHERE, CUBE, CYLINDER and CONE. 04

Q.4 (a) Explain following AutoCAD command with example.
(1) TABSURF (2) 3D ARRAY (3) RULESURF 03

OR

(a) Explain SLICE, UNION and WCS AutoCAD command in brief with suitable example. 03

(b) Answer following. (i) What are the file extensions given to parts? Assemble? Drawing? Sketches? (ii) Explain parent /child relationships in Creo. 04

OR

(b) Write down AutoCAD command to prepare surface model of the fig.1. 04

(c) Write steps to prepare an AutoCAD 3D model of the given fig.2.Specify the name of the command, option and position of UCS. 07

Q.5 (a) Write the commands to prepare solid model of the given fig3 by using Pro-E(Creo). 04

(b) Explain assemble modeling in Pro-E (Creo) with suitable example. 04

(c) Enlist type of parametric modeling of CAD soft ware. Write feature of any one. 03

(d) Explain various constraints used in Pro-E (Creo) solid modeling. 03

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Figure 1

Figure 2

Figure 3

All dimensions in mm