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Power Systems

Power Systems
In which of the following given faults, all the sequence currents are equal?

 LG
 LLG
 LL
 LLL

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Power Systems
If the fault is very nearer to the generator, the fault current is

 less
 zero
 any of the above
 larger

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Power Systems
If sag in an overhead line increase, tension in the line

 decrease
 increase
 remains same
None of these

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Power Systems
Pump storage schemes are used to improve

  the plant capacity factor as well as the load factor of the power system.
 the diversity factor.
 the load factor.
 the power factor.

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Power Systems
The function of draft tube is reaction turbine is to

  convert kinetic energy of water.
 all of above.
 increase flow rate of water.
 reduce water hammer.

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Power Systems
Mho relay is usually employed for protection of

 long transmission lines only
 short transmission lines only
 medium transmission lines only
 any line

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