Power Systems
A CANDU reactor uses

 only fertile materials.
 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.

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Power Systems
ACSR means

 Aluminium conductor steel reinforced
 Aluminium core steel reinforced
 all conductor steel reinforced
 Aluminium copper steel reinforced

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