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Power Systems

Power Systems
Buchholz relay is used for protection of

  alternator.
  transformer.
  none of these.
  bus bar.

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Power Systems
Which of the following transformer is used in sub station for operating a protective relay?

All of these
 distribution transformer
 auto transformer
 capacitor voltage transformer

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Power Systems
A generating station has a maximum demand of 100 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is

 10 MW
 20 MW
 15 MW
 80 MW

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Power Systems
Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching

  SF6.
  vacuum.
  air blast.
  oil.

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Power Systems
A generated station has a maximum demand of 30 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is

 5 MW
 6 MW
 10 MW
 12 MW

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Power Systems
The skin effect of conductor will increase when

 frequency decrease
All of these
 resistivity decrease
 diameter decrease

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