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Power Systems

Power Systems
Buchholz relay is used for protection of

  bus bar.
  transformer.
  none of these.
  alternator.

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Power Systems
For 132 kV system, the reactance and capacitance up to the location of the CB is 3 Ω and 0.015 μF respectively. The maximum value of RRRV is

 12.2 kV / μs.
  9.01 kV / μs.
 10.01 kV / μs.
 2.0 kV / μs.

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Power Systems
Which of the following is not a secondary nuclear fuel

  U235.
 Pu239.
 None of above.
 U233.

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Power Systems
When a transformer is loaded, the secondary terminal voltage gains. That means power factor is

 lagging.
 unity.
  leading.
 zero.

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Power Systems
Oxide film arrestor has which of the following properties?

 It is expensive.
 Does not require daily charging.
 Installed at points of transmission line where daily visit is difficult.
 Both A and B.

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Power Systems
A penstock is used as a condition between

 the turbine and discharge drain.
  the dam and the turbine in a hydro station.
 none of above.
 the heat ex-changer and the turbine in nuclear power plant.

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