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Power Systems

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

 V and δ
 δ and Q
 P and V
 P and Q

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Power Systems
In nuclear power plants which material is/are used as coolant?

 beryllium
 graphite
 liquid sodium
All of these

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Power Systems
A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator?

 1000
 0.1
 10
 0.001

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Power Systems
In a transmission line the insulators to be used at the dead end or sharp curves are

 suspension type
 any of the above
 strain type
 pin type insulator

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Power Systems
Advantages of higher transmission voltage is/are

 Area of cross section and volume of the conductor is reduced
All of these
 Transmission line losses are reduced
 Power transfer capability of the transmission line is increased

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Power Systems
Making current is a------------ value?

 average
 any of the above
 peak value
 RMS

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