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Power Systems

Power Systems
Find the value of a729, where "a" is the operator

 α²
 α
 0
 1

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Power Systems
In a thermal power plants, pressure in the working fluid cycle is developed by

 superheater.
  feed water pump.
 condenser.
 turbine.

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Power Systems
If the inertia constant H = 10 MJ/MVA for a 50 MVA generator, the stored energy is

 50 MJ
 500 MJ
 5 MJ
 10 MJ

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 400/5. The pick up value is

 15 A
 10 A
 12.5 A
 6.25 A

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Power Systems
A power generating station has a plant capacity of 200 MW and maximum power demand is 150 MW. If average power generation is 110 MW, then find the load factor and capacity factor respectively?

 0.65 and 0.55
 0.55 and 0.733
 0.733 and 0.65
 0.733 and 0.55

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Power Systems
The ratio of reset to pick up current for an induction cup relay is approximately

 0.75.
 1.35.
 1.0.
  0.99.

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