Power Systems
Characteristics of arc quenching medium is/are

 High thermal conductivity
All of these
 Non flammable
 High dielectric strength

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Power Systems
A CANDU reactor uses

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

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