Power Systems
Which of the following relays are used in protection of medium transmission lines?

 Mho relays
 Impedance relays
 any of the above
 Admittance relays

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Power Systems
A sodium graphite reactors use

 a mixture of sodium and graphite as coolant.
 a mixture of sodium and graphite as moderator.
  sodium as coolant and graphite as moderator.
 sodium as moderator and graphite as coolant.

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