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Power Systems

Power Systems
Range of accelerating factor is

 1.6 to 1.8
 1 to 10
 50 to 100
 10.8 to 11.2

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Power Systems
In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%.

 83.76 kV
 48.36 kV
 52.84 kV
 20 kV

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Power Systems
Alternate formation and breakage of bubbles are called

All of these
  water hamming.
  surgfication.
  cavitations.

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Power Systems
The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is

 0.5 pu
 4 pu
 2 pu
 0.2 pu

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

 50 MJ
 8 MJ
 200 MJ
 400 MJ

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Power Systems
The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

 shunt resistance at receiving end
All of these
 shunt capacitor at receiving end
 shunt reactor at receiving end

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