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Power Systems

Power Systems
Pumped storage plant is a

 both 1 and 2
 peak load plant
None of these
 base load plant

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Power Systems
In a thermal power plant, which of its following components needs maximum maintenance attention

 Condenser.
 Steam turbine.
 Super heater.
 Boiler.

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Power Systems
String efficiency depends upon

 voltage rating of whole string.
 no. of SCR in the string.
  all of these.
 voltage rating of one SCR.

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Power Systems
The unit protection scheme provides

 simultaneous protection.
 back up protection.
 remote protection.
  primary protection.

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

 distance relays
 reverse power relay
 impedance relay
 offset mho relay

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Power Systems
For large plants of capacity for more than 15 MW, what type of cooling is used

  Liquid.
  Hydrogen.
  Water.
  Air.

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