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Power Systems

Power Systems
For n bus power system size of Y bus matrix is

 n×n
 (n-2)×(n-2)
 (n-1)×(n-2)
 (n-1)×(n-1)

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Power Systems
For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to

  1 / V2.
 V.
 V2.
 1 / V.

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Power Systems
Efficiency of thermal power plant can be taken as

  product of efficiencies of all stages.
  generator efficiency.
  efficiency of thermal cycle.
  turbine efficiency.

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Power Systems
Reflector nuclear reactor are made of

 steel.
 boron.
  beryllium.
 cast iron.

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Power Systems
Most commonly used material for insulator is

 glass
All of these
 mica
 porcelain

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Power Systems
Making and breaking currents of 3 phase AC circuit breakers in power system are respectively in what form?

 any of the above
 RMS and RMS value
 RMS and Instantaneous value
 Instantaneous and RMS value

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