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Power Systems

Power Systems
Ferranti effect occurs under

 any of the above
 half load
 no load
 full load

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Power Systems
Mho relays are used for the protection of which of the following lines?

 long transmission lines only
None of these
 short transmission lines only
 medium transmission lines only

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Power Systems
Skin effective is more in case of

None of these
 same in both cases
 communication lines
 power lines

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Power Systems
Advantage/s of per unit system as compare to absolute system?

 calculation time is less
All of these
 memory required is less
 only one equation is required

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Power Systems
Which one of following fuels is used by slow thermal nuclear reaction for power generation

  U235.
 Pu239.
 Th232.
 U238.

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Power Systems
A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is

 33.33%
 66.66%
 25%
 75%

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