Power Systems
In case of failure of prime mover of the generator, which type of relay is used?

 impedance relay
 offset mho relay
 distance relays
 reverse power relay

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Power Systems
Gas coolled reactor

 use coolant at pressure of 14-28 Kg/cm2 and at temperature of 700°-800° c.
  both B and C.
 use heavy water as coolant as well as moderator.
 use CO2. or helium as coolant and graphite the moderator.

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