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Power Systems

Power Systems
Demand factor of a plant is

 0
 less than 1
 greater than 1
 1

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Power Systems
In a thermal power plant, which of its following components needs maximum maintenance attention

 Steam turbine.
 Super heater.
 Boiler.
 Condenser.

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Power Systems
A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is

 38.6
 31.7
 23.9
 35.45

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Power Systems
Which of the following power stations is mainly used to cover peak load on the system?

 nuclear plant
 coal based thermal power plant
 pumped storage hydro power plant
 gas based thermal power plant

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

  0.99.
 1.0.
 0.75.
 1.35.

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Power Systems
Deaerative heating is done to

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

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