Power Systems
Binary vapor cycle are used for

All of these
  improving the plant efficiency.
  increasing the turbine efficiency.
  improving the condenser performance.

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Power Systems
The advantage of hydro electric power station over thermal power station is

 hydro electric station can be constructed at the place where the energy is required
 hydro electric power station can supply the power throughout the year
 the operation cost of hydro electric power station is low
 the initial cost of hydro electric power station is low

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Power Systems
A CANDU reactor uses

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

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