GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-VIII (OLD) EXAMINATION — WINTER 2020
--- Content provided by FirstRanker.com ---
Subject Code:180903 Date:21/01/2021Subject Name:Power System Practice And Design
Time:02:00 PM TO 04:00 PM Total Marks: 56
Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
Q-1 (a) Explain classification of lamp-flicker and remedies for reducing lamp- 07
flicker.
(b) Explain applications of HVDC system 07
--- Content provided by FirstRanker.com ---
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
--- Content provided by FirstRanker.com ---
applications(b) Explain the methods of designing primary distribution system with 07
reference to
(1) Choice of voltage
(2) Conductor size
--- Content provided by FirstRanker.com ---
(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
--- Content provided by FirstRanker.com ---
(b) Write a note on insulation' co-ordination and basic insulation levels 07adopted 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
--- Content provided by FirstRanker.com ---
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.
--- Content provided by FirstRanker.com ---
(b) Write a brief note on Gas Insulated Substation. 07--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University