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Power Systems

Power Systems
For load flow studies, What are the quantities specified at load bus are

 δ and Q
 P and V
 V and δ
 P and Q

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Power Systems
If the conductor diameter decreases, inductance of the line,

 remains unaffected
 decreases
 increases
None of these

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Power Systems
Rankine cycle efficiency of a steam power plant is of

  60 - 80 %.
  20 - 30 %.
  45 - 80 %.
  30 - 45 %.

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Power Systems
The receiving end voltage for a long line under no load condition is

 equal to the sending end voltage
 more than the sending end voltage
 less than the sending end voltage
 any of the above

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Power Systems
Direct conversion of heat energy into electrical energy is possible through

 Fuel or solar cell.
 Thermal converters.
 Both A and C.
 MHD generator.

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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
 6 MJ/MVA
 2 MJ/MVA
 4 MJ/MVA

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