Download AKTU B-Tech 8th Sem 2016-17 NEN042 Power Quality Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 8th Semester (Eight Semester) 2016-17 NEN042 Power Quality Question Paper

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B.TECH.
THEORY EXAMINATION (SEM?VIII) 2016-17
POWER QUALITY
T ime : 3 Hours Max. Marks : 100
Note .' Be precise in your answer. In case ofnumericalproblem assume data wherever not provided.
SECTION ? A
1. Explain the following: 10 x 2 = 20
(a) What is the meaning of the term ?Power Quality?.
(b) Define the term ?Voltage Swell
(c) What are the Sources of Electrical Transients in Power System
(d) Define the terms Notching and Harmonics
(e) What is Flicker meter?
(1) What could be the impact of ?Poor Power Quality? on systems ef?ciency, reliability
and operation?
(g) What is ?CUSTOM POWER??
(h) Define any two types of devices used for over voltage protection.
(i) What are the causes of voltage and current harmonics?
(j) Explain how power quality issue ?Voltage regulation? affected by distributed
Generation.
SECTION ? B
2. Attempt any ?ve of the following questions: 5 x 10 = 50
(a) Discuss the working of Active Series compensator.
(b) Discuss the different types of Waveform distortion
(c) What is the Meaning of ?Voltage Sag?? What are the causes of the Voltage Sag in a
power System?
(d) What are the different types of Electrical Transients occur in a Power System?
(e) Discuss the Effect of Harmonics on the Transformers and AC motors in details
(1) Discuss the Harmonics Mitigation Techniques in Detail.
(g) Explain the different types of Network reconfiguration devices with a circuit diagram.
(h) What are the equipments needed to minimize the voltage disturbance? Identify the
location of these.
SECTION ? C
Attempt any two of the following questions: 2 x 15 = 30
3. What are the Causes of Voltage and Current Harmonics? Discuss the Harmonics Measurement
Techniques.
4. With suitable block diagram, explain the working difference between ?On?line UPS? and ?Off?
line UPS?.
5. Discuss the load compensation and Voltage Regulation using DSTATCOM.
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