Power Systems
The main advantage of the Decoupled Load Flow (DLF) as compared to the NR method is

 number of iterations are less
 reduced memory requirements in storing the Jacobian elements
All of these
 accuracy is more

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Power Systems
A CANDU reactor uses

 enriched uranium as fuel and ordinary water as moderator and cooler.
  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.

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