Download GTU BE/B.Tech 2019 Summer 4th Sem New 2142404 Basic Power Systems Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 4th Sem New 2142404 Basic Power Systems Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2142404 Date:09/05/2019
Subject Name: Basic Power Systems
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) List the advantages and disadvantages of Nuclear power station. 03
(b) Define
(1) skin effect (2) string efficiency (3) sag (4) PU system
04
(c) Draw and explain schematic arrangement of Thermal power plant. 07

Q.2 (a) What is power factor? Draw and explain power triangle. 03
(b) What is Corona effect? Which factor affecting its. 04
(c) Explain the disadvantages of low power factor. Explain the calculation of
power factor correction with necessary diagram.
07
OR
(c) Define String efficiency. Explain method of improving string efficiency. 07
Q.3 (a) Explain in brief the uses and importance of breaker and fuses in power
system.
03
(b) Explain performance of single-phase short transmission line. 04
(c) Derive the equation of most economical power factor. 07
OR
Q.3 (a) Explain the Ferranti effect with necessary diagram. 03
(b) Discuss Concept of Symmetrical Components. 04
(c) Derive the equation of an inductance of a conductor and loop inductance
for single-phase two wire line.
07
Q.4 (a) Define the grounding and explain Neutral grounding. 03
(b) Explain types of DC links in brief. 04
(c) Enumerate the basic equipment used in HVDC transmission. Explain the
operation of converters in HVDC transmission system.
07
OR
Q.4 (a) What is solid grounding? Enumerate its limitation. 03
(b) Discuss requirement and advantages of Neutral Grounding. 04
(c) List the advantages of HVDC transmission. 07
Q.5 (a) List the causes of low power factor. 03
(b) List the types of insulators used in transmission lines. 04
(c) Give the Classification of Sub-station. Explain comparison between
indoor and outdoor substation.
07
OR

Q.5 (a) Draw the key diagram of 11kV/400V sub-station. 03
(b) Explain end condenser method for medium transmission line. 04
(c) Explain bus bar arrangements in substation. 07

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