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Posted By: Sree.... Member Level: Diamond Posted Date: 13 Jun 2008
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2006 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech POWER PLANT INSTRUMENTATION Set No. 4 Question paper
Code No: RR411003 Set No. 4
IV B.Tech I Semester Supplementary Examinations, March 2006
POWER PLANT INSTRUMENTATION
(Electronics & Instrumentation Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. Explain how power is generated in Wind mills. [16]
2. Explain the importance of instrumentation in hydroelectric power plant. [16]
3. What is meant by reactive power? Why reactive power measurement is to be made?
Explain the method of measuring single phase reactive power with a neat diagram.
[16]
4. (a) Explain the principle of head type flow meter to measure the feed water flow
rate with a suitable diagram.
(b) What is a rotameter? Can it be used to control the flow rate? How the
viscosity effects of the fluid can be compensated. [8+8]
5. With the help of neat sketch clearly explain about Economizer used in power plants?
[16]
6. Explain in detail about interlocks in boilers used in power plants? [16]
7. Explain in detail how turbine speed is monitored and controlled. [16]
8. (a) Explain the measurement of pH with Glass electrode.
(b) Write a brief notes on the sensing devices of pH meter. [8+8]
? ? ? ? ?
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