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Power Systems

Power Systems
A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of

 78%
 76%
 82%
 80%

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Power Systems
Proximity effect depends on

All of these
 frequency
 relative permeability
 distance between the conductors

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Power Systems
Deaerative heating is done to

  remove dissolved gases in water.
 heat the steam.
 heat the feed water.
 remove dissolved.

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Power Systems
If the inertia constant H = 8 MJ/MVA for a 50 MVA generator, the stored energy is

 200 MJ
 50 MJ
 400 MJ
 8 MJ

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Power Systems
A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is

 4
 20
 8
 10

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Power Systems
Find the number of strands of ACSR conductor for 4 layer transmission line?

 37
 29
 1
 7

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