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Power Systems

Power Systems
In nuclear power plants which material is/are used as coolant?

 beryllium
All of these
 graphite
 liquid sodium

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Power Systems
A diesel power plant is generally used as a/an

 Base load.
 Peak loads.
 Any of above.
 Standby/emergency plant.

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Power Systems
Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of

  high energy loss from turbine exhaust to condenser.
 low alternative efficiency.
 high energy loss in boiler.
 low steam turbine mechanical efficiency.

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Power Systems
A CT is connected in ___________________ with the line.

  series.
  both A and B.
  not connected.
  across.

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Power Systems
What is the correct expression for the electrical power developed by

 75 × 0.736 × WQHη.
 ( 75 / 0.736 ) × WQHη.
  ( 0.763 / 75 ) × WQHη.
 ( 7 / 75 ) × WQHη.

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Power Systems
The Y bus matrix of a 100 bus interconnected system is 90% sparse. Then find the number of non zero elements in the Y bus matrix?

 10
 9000
 1000
 90

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