Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 6th Sem New 2160911 Computer Aided Analysis And Design For Electrical Engg. Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI (NEW) EXAMINATION ? WINTER 2018
Subject Code:2160911 Date:04/12/2018
Subject Name:Computer Aided Analysis and Design for Electrical Engg.
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) State the possible parameters to be inputted to the CAD program as
specifications.
03
(b) Discuss how Computer Aided Design process is beneficial compared to
the conventional manual way to design.
04
(c) Discuss the procedural flow to compute total Ampere Turns for any
electromagnetic device.
07
Q.2 (a) State classes for the type of rating electrical motors. State expression to
estimate power rating of a motor based of particular loading pattern.
03
(b) Show how designing proper heat flow throughout the rotating machine
is essential for proper functioning of the machine. Name the different
types of ventilations?
04
(c) Consider the case of a choke coil seems to get saturated at load where it
should display a linear nature. Discuss, how Finite Analysis helps to
improve design to overcome above problem. Describe steps involved in
process in brief.
07
OR
(c) How do you interpret role of FE Analysis tool in conventional Computer
Aided Designing process? Explain following terms in respect to FE
Analysis:
i) Meshing
ii) Boundary conditions
iii) Contour Analysis
07
Q.3 (a) Discuss the qualities good magnetic material should contain. 03
(b) Discuss the algorithmic steps for optimal design. 04
(c) Illustrate a case of design optimization where FE Analysis of
electrostatic field with appropriate diagrams.
07
OR
Q.3 (a) State the significance of specific Electric loading. 03
(b) Discuss the requirements of high conductive material.
04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI (NEW) EXAMINATION ? WINTER 2018
Subject Code:2160911 Date:04/12/2018
Subject Name:Computer Aided Analysis and Design for Electrical Engg.
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) State the possible parameters to be inputted to the CAD program as
specifications.
03
(b) Discuss how Computer Aided Design process is beneficial compared to
the conventional manual way to design.
04
(c) Discuss the procedural flow to compute total Ampere Turns for any
electromagnetic device.
07
Q.2 (a) State classes for the type of rating electrical motors. State expression to
estimate power rating of a motor based of particular loading pattern.
03
(b) Show how designing proper heat flow throughout the rotating machine
is essential for proper functioning of the machine. Name the different
types of ventilations?
04
(c) Consider the case of a choke coil seems to get saturated at load where it
should display a linear nature. Discuss, how Finite Analysis helps to
improve design to overcome above problem. Describe steps involved in
process in brief.
07
OR
(c) How do you interpret role of FE Analysis tool in conventional Computer
Aided Designing process? Explain following terms in respect to FE
Analysis:
i) Meshing
ii) Boundary conditions
iii) Contour Analysis
07
Q.3 (a) Discuss the qualities good magnetic material should contain. 03
(b) Discuss the algorithmic steps for optimal design. 04
(c) Illustrate a case of design optimization where FE Analysis of
electrostatic field with appropriate diagrams.
07
OR
Q.3 (a) State the significance of specific Electric loading. 03
(b) Discuss the requirements of high conductive material.
04
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2
(c) Prepare a flow chart for Computer Aided Designing of a single -phase
transformer.
07
Q.4 (a) Which are the main types of windings in transformers? 03
(b) What is the purpose of dummy coils in armature winding design? In
which type of armature winding design, it is used?
04
(c) Draw a flowchart for design of starter for DC motor. 07
OR
Q.4 (a) List out the criteria for selection of type of transformer out of core type
and shell type.
03
(b) What is the purpose of equalizer connections? In which type of armature
winding design, it is used?
04
(c) Draw flowchart for design of field regulator for DC motor. 07
Q.5 (a) State factors to be considered while selection of airgap for DC machines. 03
(b) Which parameters can be iterated within lower and upper bounds for the
optimization of DC machine.
04
(c) Explain Global coefficient matrix, skin and proximity effect in
conductors.
07
OR
Q.5 (a) State factors to be considered while selection of slot dimensions (depth,
width, tooth width) for DC machines.
03
(b) Which parameters can be iterated within lower and upper bounds for the
optimization of power transformer.
04
(c) Develop and discuss algorithmic steps to design of frame size and
standard stampings for DC machines.
07
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This post was last modified on 20 February 2020