Power Systems
A CANDU reactor uses

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

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Power Systems
Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

 both 1 and 2
 initial cost is low
 smooth voltage regulation is possible by controlling excitation
 single unit can be used as both capacitance and inductor by adjusting the excitation

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Power Systems
A sodium graphite reactors use

 a mixture of sodium and graphite as coolant.
 sodium as moderator and graphite as coolant.
 a mixture of sodium and graphite as moderator.
  sodium as coolant and graphite as moderator.

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