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Power Systems

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

 P and Q
 P and V
 V and δ
 δ and Q

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Power Systems
A 10 MVA generator has reactance of 0.2 pu. Find the new reactance value for 50 MVA base?

 0.25 pu
 1 pu
 0.2 pu
 5 pu

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Power Systems
If the inertia constant H = 10 MJ/MVA for a 50 MVA generator, the stored energy is

 500 MJ
 5 MJ
 50 MJ
 10 MJ

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Power Systems
Skin effect depends on

 relative permeability
 conductivity
All of these
 frequency

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Power Systems
A gas turbine power plant is best suited for

 Emergency.
 None of these.
 Peak load.
 Base load.

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Power Systems
Which material is used in controlling chain reaction in a nuclear reactor

 Thorium.
 Heavy water.
 Beryllium.
  Boron.

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