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Power Systems

Power Systems
More efficient plants are used as

 base load plant
 both 1 and 2
None of these
 peak load plant

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Power Systems
A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of

 82%
 80%
 78%
 76%

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Power Systems
The function of a surge tank is to

 produce surge in the pipeline.
 none of above.
  relieve water hammer pressure in the penstock.
 supply water at constant pressure.

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Power Systems
Which device is used for protection of equipment from from damage caused by overload or short circuit?

 CVT
 circuit breaker
 current transformer
 lightning arrester

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Power Systems
The rating of CB is in terms of

  current.
  VAR.
  volt - ampere.
  voltage.

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Power Systems
The sequence components of the fault current are as follows: IR1 = j1.5 pu, IR2 = -j0.5 pu, IR0 = -j1. The type of fault is

 LLG
 LG
 LL
 LLL

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