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Power Systems

Power Systems
In thermal plant most of the energy is wasted in

 condenser
 ESP
 boiler
 turbines

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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.

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

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Power Systems
Generation of of one watt needs about ______________ fission per second

  3.1 × 1010.
 3.1 × 106.
 3.1 × 107.
 3.1.

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Power Systems
Which of the following produces the radio interference in communication lines?

None of these
 electro static induction
 both 1 and 2
 electro magnetic induction

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Power Systems
A transmission line has 200 km operating at frequency of 10 Hz Hz. Find the type of the line

 medium transmission line
 short transmission line
 long transmission line
 any of the above

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Power Systems
An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is

 500 MVA
 200 MVA
 400 MVA
 100 MVA

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