Power Systems
The power output of a nuclear power station is proportional to

 none of above.
  the rate at which fission reaction occurs.
 square root of the rate at which fission reaction occurs.
 square of the rate at which fission reaction occurs.

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Power Systems
A CANDU reactor uses

 only fertile materials.
  natural uranium as fuel and heavy water as moderator and coolant.
 highly enriched uranium as fuel and water as moderator and coolant.
 enriched uranium as fuel and ordinary water as moderator and cooler.

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Power Systems
In a biased differential relay the bias is defined as the ratio of

  number of turns of restraining and operating coil.
  fault current and operating coil current.
  operating coil current and restraining coil current.
  fault current and restraining coil current.

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