Saturday, October 31, 2015

EE2028 Power Quality BE EEE Nov Dec 2015 Important Questions

Searching for most important questions of EE2028 Power Quality from Anna University Chennai ? You can here find all important questions of EE2028 Power Quality . This is the exam being conducted by AU Chennai in Nov Dec 2015. Collect those important questions to prepare your exam. These questions may or may not asked in the coming examinations. But will certainly help you to boost your marks.


Anna University Chennai
Department of B.E EEE
Eight Semester
EE2028 Power Quality
November / December 2015 Exam Important Questions
(Regulation 2008)



1. Explain the various types of power quality disturbances and impacts of power quality

2. Discuss the following characteristics of power quality events
(i) Short duration variations. (8)
(ii) Long duration variations. (8)

3. Define waveform distortion? Explain the waveform distortion categories

4. Explain the following steady state disturbances. (i) Magnitude (ii) Unbalance (iii) Harmonics (iv)
Flicker. (16)

5. What is the need of estimating sag performance? Explain the different methods of estimating
voltage sag performance. (16)

6. Explain the following causes of sags. (i)Voltage sag due to motor sag (ii)Voltage sag due to single line to ground fault. (iii) Voltage sags due to transformer energizing. (16)

7. Explain the following sag mitigation techniques. (i) Static UPS with minimal energy storage (ii)
Backup storage energy supply (iii) Flywheel with UPS system. (16)

8. Discuss about estimating the cost of voltage sag events. (16)

9. What are transient over voltages? Explain the different types of transient over voltages. (16)

10. Draw the standardized waveform of the lightning induced voltage. Discuss about the wave shape of the lightning current. (16)

11. Explain the following: (i) Low pass filters. (ii) Power conditioners. (iii) Surge filters. (16)

12. (a) what are the various lightning protection of over voltage lines? Explain them. (8)
(b)Explain the use of PSCAD in analyzing the Power quality. (8)

13. Explain briefly about fundamentals of harmonics generation and waveform distortion. (16)

14. Explain the following terms. (i) Harmonic distortion (ii) Current distortion (iii) Voltage distortion (16)

15. Explain for the following: (i) Harmonic sources from commercial loads. (ii) Harmonic sources from industrial loads. (iii) Harmonic sources from residential loads. (16)

16. Define for the following terms related with IEEE standards. (i) SCR (ii) Load current (iii) Short circuit current (iv) Total harmonic distortion (v) Total demand distortion (v) PCC (16)

17. Bring out the significance of Power quality monitoring. What is the important power quality
monitoring objectives? (16)

18. Explain the harmonic analyzer and disturbance analyzer. (16)

19. Discuss in detail about the instruments used for analyzing non sinusoidal voltage and currents. (16)

20. Draw the block diagram of advanced power quality monitoring systems. Explain it. (16)
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