Download GTU B.Tech 2020 Winter 8th Sem 180903 Power System Practice And Design Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 8th Sem 180903 Power System Practice And Design Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VIII (OLD) EXAMINATION ? WINTER 2020
Subject Code:180903 Date:21/01/2021
Subject Name:Power System Practice And Design
Time:02:00 PM TO 04:00 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q-1
(a)
Explain classification of lamp-flicker and remedies for reducing lamp-
07
flicker.
(b) Explain applications of HVDC system
07


Q-2
(a)
Explain the role of Kelvin's law for the selection and size of feeders.
07
(b) Define critical disruptive voltage and visual critical voltage. How
07
Corona los can be determined? What is significance of Corona in the
design of transmission line?


Q-3
(a)
Compare radial, ring and grid distribution system. State their
07
applications
(b) Explain the methods of designing primary distribution system with
07
reference to
(1) Choice of voltage
(2) Conductor size
(3) type of distribution system
(4) Voltage drops.



Q-4
(a)
Explain main considerations in mechanical design of transmission line
07
(b) Explain the design considerations for EHV transmission lines.
07


Q-5
(a)
Draw substation layout. Explain each component of layout.
07
(b) Write a note on insulation co-ordination and basic insulation levels
07
adopted for EHV lines and equipment.



Q-6
(a)
Explain touch potential and step potential. How to measure soil
07
resistivity?
(b) Explain Radio and Television interference.
07


Q-7
(a)
Explain factors to be considered for selection of size and location of
07
generating station.

(b) What are the steps to be followed in the design of an earthing grid?
07



Q-8
(a)
Draw and explain single line diagram showing main connections of
07
HVDC transmission.
(b) Write a brief note on Gas Insulated Substation.
07
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