Download GTU BE/B.Tech 2019 Winter 8th Sem New 2180911 Power Quality And Management Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 8th Sem New 2180911 Power Quality And Management Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VIII (New) EXAMINATION ? WINTER 2019
Subject Code: 2180911 Date: 21/11/2019

Subject Name: Power Quality And Management
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.


MARKS

Q.1 (a) Discuss the sources of voltage sag 03
(b) Name and explain different types of power Quality issues that affect the
power system depending upon the severity?
04
(c) Discuss the responsibilities of suppliers and users for power quality. 07

Q.2 (a) How atmospheric conditions are responsible for transients in power system. 03
(b) What is an ITC graph? Draw and discuss the ITIC graph in detail. 04
(c) List cures for low frequency disturbances. Explain any two 07
OR
(c) Explain different power frequency disturbances. 07
Q.3 (a) What are the different sources of transient overvoltage? 03
(b) What do you mean by order of harmonics? When even order harmonics will
be present in the system? Explain its effect on induction motor.
04
(c) Define Transient. Discuss switching of loads & interruption of fault currents
as cause of transients
07
OR
Q.3 (a) Differentiate Grounding & Bonding 03
(b) Explain the signal reference ground methods 04
(c) List and explain various harmonic mitigation techniques 07
Q.4 (a) State the importance of power factor in industry as per power quality study 03
(b) Define (i) radiated emission (ii) Attenuation (iii) common mode noise (iv)
transverse mode noise.
04
(c) Define, displacement power factor and true power factor. List the methods of
power factor improvement techniques and explain the static VAR
compensator.
07
OR
Q.4 (a) What is Electromagnetic Interference? Describe main sources of EMI 03
(b) Describe the effect of EMI on power quality. 04
(c) What is EMI? Explain the EMI mitigation techniques 07
Q.5 (a) Write short note on importance and application of True RMS meter 03
(b) List and explain advantages and disadvantages of distributed generation. 04
(c) Explain number of test locations & test durations for power quality. 07
OR
Q.5 (a) Describe phenomena of islanding. 03
(b) What are the various instruments used for power quality measurements. 04
(c) List and explain various power quality issues affected by distributed
generation
07


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