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Power Systems

Power Systems
Buchholz relay is used for protection of

  alternator.
  none of these.
  transformer.
  bus bar.

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Power Systems
Bonding is done at the both ends of the cable to reduce the

 sheath loss
 iron loss
 copper loss
None of these

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Power Systems
If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments?

 31.35 to 34.65 kV
 25 to 35 kV
 any voltage above 33 kV
 33 to 50 kV

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Power Systems
Pump storage schemes are used to improve

 the diversity factor.
  the plant capacity factor as well as the load factor of the power system.
 the load factor.
 the power factor.

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Power Systems
The rate of rise of re-striking voltage is dependent upon

 capacitance of the system only
 resistance of the system only
 both 1 and 2
 inductance of the system only

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Power Systems
The use of high speed circuit breakers

 increased the short circuit current.
  improves system stability.
 decrease system stability.
 reduces the short circuit current.

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