GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-VII (NEW) EXAMINATION — WINTER 2020
Subject Name:Power Quality and Management
Date:19/01/2021
Time:10:30 AM TO 12:30 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.
Q.1 Justify — “Power quality is the cause, and the ability of the electrical equipment to function in the power quality environment is the effect”. (03)
Q.2 What are the causes for the transients? Explain any one in detail. (04)
Q.3 Define: (1) Bonding (2) Coupling (3) Distortion Factor (4) Flicker (07)
Q.4 What is shock? Explain in detail. (03)
Q.6 How isolation transformer cures the low frequency disturbances? (07)
Q.7 Differentiate single point grounding system and multi point grounding system. (03)
Q.8 What are the causes of current and voltage harmonics? (04)
1. Discuss in detail about the harmonics phase rotation and phase angle relationship. (07)
3. What are the essential elements of grounding system? (04)
(2) Explain earth resistance test in detail. (07)
(b) Define: (1) Radiated emission (2) Attenuation (3) Transverse mode noise (03)
© Justify the statement “Shielding is required to mitigate the radiated emission”. (04)
(b) What are the advantages of power factor correction? (03)
© Explain the use of true RMS meter. (04)
() Draw and explain the application of synchronous condenser for power factor correction. (07)
(b) What are the instruments are available to measure the power quality? (03)
() Explain cable shielding grounding method to minimize the electromagnetic interference. (07)
(b) Explain the main steps to monitor the power quality problems at site. (03)
© How multiple test locations determine the nature of power quality? (04)
() Discuss the use of harmonic analyzers for measuring and recording harmonic distortion data. (07)
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-VII (NEW) EXAMINATION — WINTER 2020
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Subject Code:2170910Subject Name:Power Quality and Management
Date:19/01/2021
Time:10:30 AM TO 12:30 PM
Total Marks: 56
--- Content provided by FirstRanker.com ---
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 Justify — “Power quality is the cause, and the ability of the electrical equipment to function in the power quality environment is the effect”. (03)
Q.2 What are the causes for the transients? Explain any one in detail. (04)
Q.3 Define: (1) Bonding (2) Coupling (3) Distortion Factor (4) Flicker (07)
Q.4 What is shock? Explain in detail. (03)
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Q.5 Explain the terms individual harmonic distortion and total harmonic distortion with example (04)Q.6 How isolation transformer cures the low frequency disturbances? (07)
Q.7 Differentiate single point grounding system and multi point grounding system. (03)
Q.8 What are the causes of current and voltage harmonics? (04)
1. Discuss in detail about the harmonics phase rotation and phase angle relationship. (07)
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2. Define displacement power factor and true power factor in (03)3. What are the essential elements of grounding system? (04)
(2) Explain earth resistance test in detail. (07)
(b) Define: (1) Radiated emission (2) Attenuation (3) Transverse mode noise (03)
© Justify the statement “Shielding is required to mitigate the radiated emission”. (04)
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() What are the effects of harmonics on AC motors? (07)(b) What are the advantages of power factor correction? (03)
© Explain the use of true RMS meter. (04)
() Draw and explain the application of synchronous condenser for power factor correction. (07)
(b) What are the instruments are available to measure the power quality? (03)
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© Explain in detail about the triboelectricity. (04)() Explain cable shielding grounding method to minimize the electromagnetic interference. (07)
(b) Explain the main steps to monitor the power quality problems at site. (03)
© How multiple test locations determine the nature of power quality? (04)
() Discuss the use of harmonic analyzers for measuring and recording harmonic distortion data. (07)
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