Exam Details
| Subject | power quality | |
| Paper | ||
| Exam / Course | m.tech | |
| Department | ||
| Organization | Institute Of Aeronautical Engineering | |
| Position | ||
| Exam Date | July, 2017 | |
| City, State | telangana, hyderabad |
Question Paper
Hall Ticket No Question Paper Code: BPE210
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
M.Tech II Semester End Examinations (Regular) July, 2017
Regulation: IARE-R16
POWER QUALITY
(Power Electronics and Electrical Drives)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. Explain various power quality problems and their causes?
Explain the effect of DC offset current in a distribution network?
2. Describe various power quality standards of IEC and IEEE?
Define the following power quality problems:
i. Transient
ii. Total Harmonic Distortion and write the expression of current THD
iii. Power frequency variations
UNIT II
3. Explain the contribution following Industrial non-linear loads to power quality issues.
i. Three-Phase power converters
ii. Arcing devices
Explain voltage fed type of non-linear loads?
4. What are the various classifications of AC/DC converter type non-linear loads?
Describe various power quality problems caused by Non-linear loads?
UNIT III
5. Explain the Walsh transform technique for analysis of power quality measurement?
Discuss the merits and demerits of using Fourier and wavelet transforms in power quality analysis?
6. Explain the Hartley transform technique for analysis of power quality measurement?
Write in brief the historical perspective of power quality measuring instruments?
Page 1 of 2
UNIT IV
7. Define any three reliability indices for the response of the system to the power outages?
Describe the procedure for online extraction of fundamental sequential components from measured
samples?
8. What is voltage flicker and its causes? Also draw a waveform graph of the voltage flicker due
to time varying, non-linear loads?
Explain the effect of Voltage Sag on customers due to:
i. Different Source impedance topology
ii. Single line to ground fault in distribution system
UNIT V
9. What is meant by Custom Power Device and list out the different types of
Explain how a sensitive load will be protected by a DVR with a neat schematic diagram?
10. Briefly describe the following with schematic diagram:
i. Solid State Current limiter
ii. Static Transfer Switch
Describe the status of application of custom power devices?
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
M.Tech II Semester End Examinations (Regular) July, 2017
Regulation: IARE-R16
POWER QUALITY
(Power Electronics and Electrical Drives)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. Explain various power quality problems and their causes?
Explain the effect of DC offset current in a distribution network?
2. Describe various power quality standards of IEC and IEEE?
Define the following power quality problems:
i. Transient
ii. Total Harmonic Distortion and write the expression of current THD
iii. Power frequency variations
UNIT II
3. Explain the contribution following Industrial non-linear loads to power quality issues.
i. Three-Phase power converters
ii. Arcing devices
Explain voltage fed type of non-linear loads?
4. What are the various classifications of AC/DC converter type non-linear loads?
Describe various power quality problems caused by Non-linear loads?
UNIT III
5. Explain the Walsh transform technique for analysis of power quality measurement?
Discuss the merits and demerits of using Fourier and wavelet transforms in power quality analysis?
6. Explain the Hartley transform technique for analysis of power quality measurement?
Write in brief the historical perspective of power quality measuring instruments?
Page 1 of 2
UNIT IV
7. Define any three reliability indices for the response of the system to the power outages?
Describe the procedure for online extraction of fundamental sequential components from measured
samples?
8. What is voltage flicker and its causes? Also draw a waveform graph of the voltage flicker due
to time varying, non-linear loads?
Explain the effect of Voltage Sag on customers due to:
i. Different Source impedance topology
ii. Single line to ground fault in distribution system
UNIT V
9. What is meant by Custom Power Device and list out the different types of
Explain how a sensitive load will be protected by a DVR with a neat schematic diagram?
10. Briefly describe the following with schematic diagram:
i. Solid State Current limiter
ii. Static Transfer Switch
Describe the status of application of custom power devices?
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