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Power Systems

Power Systems
Which of the following materials is/are used as moderators?

All of these
 heavy water
 graphite
 beryllium

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Power Systems
The overall efficiency of a steam power plant equal to

 regenerative cycle.
  product of boiler efficiency, turbine efficiency and generator efficiency.
 the Rankine cycle.
 binary vapor cycle.

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Power Systems
Two identical synchronous machines having same inertia constant are connected in parallel and swinging together. The effective inertia constant is 4 MJ/MVA. Then each machine has inertia constant of

 8 MJ/MVA
 4 MJ/MVA
 16 MJ/MVA
 2 MJ/MVA

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Power Systems
Reflector of a nuclear reactor are made up of

 cast iron.
 steel.
  boron.
  beryllium.

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Power Systems
Galvanised steel is generally used as

 structural components.
 earth wire.
All of these
 stray wire.

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Power Systems
Pump storage schemes are used to improve

 the power factor.
 the diversity factor.
 the load factor.
  the plant capacity factor as well as the load factor of the power system.

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