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Power Systems

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

 α
 0
 α²
 1

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Power Systems
What is the approximate efficiency of a normal thermal power station?

 20-25%
 30-40%
 45-55%
 60-70%

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Power Systems
Deaerative heating is done to

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

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Power Systems
The 1st nuclear plant in world was commissioned in

  UAE.
 U.K.
  U.S.S.R.
  U.S.A.

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Power Systems
Which of the following method is used for changing power factor from leading to lagging

 shunt reactor
 any of the above
 shunt capacitor
 series capacitor

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Power Systems
Which device is used for protection of equipment from from damage caused by overload or short circuit?

 CVT
 circuit breaker
 lightning arrester
 current transformer

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