Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjust vanes is

  Impeller.
  Pelton.
  Kaplan.
  Francis.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
A CANDU reactor uses

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

ANSWER DOWNLOAD EXAMIANS APP