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Power Systems

Power Systems
Which material is used in controlling chain reaction in a nuclear reactor

 Thorium.
 Beryllium.
  Boron.
 Heavy water.

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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
 0.733 and 0.55
 0.55 and 0.733
 0.733 and 0.65

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Power Systems
Condition for maximum voltage regulation

 cosφ = X/R
 tanφ = R/X
 cosφ = R/X
 tanφ = X/R

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Power Systems
Which one of following is employed as a moderator by CANDU type of slow thermal nuclear reactors

 Water.
 Graphite.
 Beryllium.
  Heavy water.

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Power Systems
Merze price current scheme protection is used in

  alternator.
  bus bars.
  both A and B.
  transformer.

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Power Systems
The arc voltage produced in an AC circuit breaker is always

  in phase with the arc current.
 lagging the arc current by 90°.
 leading the arc current by 90°.
 in phase opposition with the arc current.

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