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Power Systems

Power Systems
The conversion ratio of breeder reactor are

 less than 1.
 1.
 none of above.
  greater than 1.

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Power Systems
Operating cost of thermal power station is

 less than that of hydroelectric power plant.
 less than that of nuclear power plant.
 is the same as that of nuclear power plant.
  less than that of diesel power plant.

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Power Systems
A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is

 50 kA.
  35 kA.
 45 kA.
 55 kA.

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Power Systems
A hydroelectric power station is commonly found in

 swamps.
 desert areas.
  hilly areas.
 grasslands.

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Power Systems
Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency?

 86%%
 50%
 75%
 90%

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Power Systems
A 25 MVA, 11 kV alternator is supplying full load at a point of 0.75 lagging. Determine the percentage increase in earning capacity when it is operated at improved power factor of 0.96 lagging.

  None of above
  28 %.
  56 %.
  14 %.

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