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Power Systems

Power Systems
Which of the following quantities are to be calculated for generator bus?

 P and Q
 P and V
 δ and V
 Q and δ

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Power Systems
Nuclear power plant are used as

 intermediate load plants.
  base load plants.
 none of above.
 peak load plants.

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Power Systems
In Francis turbine runner, the number blades is usually of the order of

  16 - 24.
 6 - 8.
 3 - 6.
 12 - 14.

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Power Systems
On what factors does the selection of a water turbine depend

  All of above.
 Working head.
 Speed.
 Nature of load.

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Power Systems
The insulation resistance of the 20 km long underground cable is 8 MΩ. Other things being same, the insulation resistance of 10 km long cable will be

 4 MΩ
 8 MΩ
 32 MΩ
 16 MΩ

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Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

 two
 one
 three
 six

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