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Power Systems

Power Systems
A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of

 80%
 78%
 76%
 82%

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Power Systems
For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV?

 8 MJ/MVA
 4 MJ/MVA
 6 MJ/MVA
 2 MJ/MVA

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Power Systems
Steady state stability of a power system is improved by

 using double circuit line instead of single circuit line
All of these
 single pole switching
 decreasing generator inertia

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Power Systems
Reflector of a nuclear reactor are made up of

 steel.
 cast iron.
  beryllium.
  boron.

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Power Systems
The 1st nuclear plant in world was commissioned in

 U.K.
  U.S.S.R.
  UAE.
  U.S.A.

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Power Systems
The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

All of these
 shunt reactor at receiving end
 shunt resistance at receiving end
 shunt capacitor at receiving end

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