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Power Systems

Power Systems
In nuclear power plants which material is/are used as coolant?

All of these
 beryllium
 liquid sodium
 graphite

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Power Systems
The value of inductance used for compensation of arcing grounds is

 1/3ω²C
 3/ω²C
 ω²C/3
 3ω²C

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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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Power Systems
Which of the following relays is/are unit protection relays?

 over current relays
 Differential relays
 Buccholz relays
 both 1 and 2

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Power Systems
Which of following power plants will take long period in erection and installation

 Thermal.
 Nuclear.
 Gas turbine.
 Hydro Power Plant

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Power Systems
Bundled conductors in EHV transmission lines

 increase capacitance
 increase inductance
 decrease capacitance
 decrease inducatance

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