GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019
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Subject Code: 2170910 Date: 23/11/2019Subject Name: Power Quality and Management
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Discuss the effect of harmonics on AC Motors. 03
(b) Define following terms with suitable example 04
1.Non Linear loads 2.Inrush Current 3.Power Factor 4.Transient
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(c) Explain Different EMI terminology. 07 Q.2 (a) What is ferro resonant transformer? 03
(b) How Mitigation Voltage Sags? 04
(c) Explain power factor improvement using static VAR compensators 07
OR
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(c) Explain the causes of transients. 07 Q.3 (a) Explain the single reference ground methods. 03
(b) What is Voltage Notch And Voltage swing 04
(c) Explain voltage tolerance criteria with suitable example 07
OR
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Q.3 (a) Explain Types of transients. 03(b) What is Individual and Total Distortion? 04
(c) Explain Causes of Voltage and current harmonics. 07
Q.4 (a) What is need of filtering in harmonics studies? 03
(b) What Is grounding? Explain the electric code grounding requirement 04
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(c) Discuss the Effect of harmonics on different loads 07 OR
Q.4 (a) What is the effect of harmonics on Capacitor Banks 03
(b) Give names of Harmonics Signature. Explain Adjustable Speed Drives(ADS) 04
(c) Explain Methods by which Harmonics can be Eliminated. 07
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Q.5 (a) What Is SMPS? 03
(b) What is Transient Disturbance Analyzer and True RMS Meter 04
(c) What is EMI? Explain the EMI Mitigation techniques 07
OR
Q.5 (a) Explain Active power and Reactive power 03
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(b) Explain interference with relaying in distributed generation 04(c) Discuss the Effect of harmonics on different loads 07
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