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Power Systems

Power Systems
Which of following materials can be used as coolant

 Heavy water.
 Helium.
 CO2.
  Any of above.

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Power Systems
The insulation resistance of the 20 km long underground cable is 8 MΩ. Other things being same, the insulation resistance of 10 km long cable will be

 32 MΩ
 4 MΩ
 8 MΩ
 16 MΩ

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Power Systems
The economics of power plant is greatly influenced by

 diversity factor
 nether 1 nor 2
 load factor
 both 1 and 2

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Power Systems
A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation?

 386 MW
 456 MW
 400 MW
 478 MW

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Power Systems
Demand factor of a plant is

 less than 1
 1
 greater than 1
 0

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Power Systems
Thermal shielding is provided to

 protected the operating personal from exposure to radiations.
 prevent the reactor wall from getting heated.
All of these
 absorb the fast neutron.

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