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Power Systems

Power Systems
Which of following materials can be used as coolant

 Helium.
 CO2.
 Heavy water.
  Any of above.

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Power Systems
Which of the following plants has the maximum eapital cost

 Steam plants.
 Diesel plants.
  Nuclear plants.
 Hydro-plants.

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Power Systems
The conversion ratio of a breeder reactor is

 less than unity.
 none of above.
  equal to unity.
  more than unity.

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Power Systems
Which of following power plants is free from environmental problem

 Diesel engine.
 Steam.
 Nuclear.
  Hydroelectric.

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Power Systems
The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are

 100, 10
 100, 0.4
 4, 10
 4, 0.4

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Power Systems
Corona is accompanied by

 power loss and interference
 violet visible light
All of these
 hissing sound

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