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Power Systems

Power Systems
Mho relay is used for protection of

  medium lines.
  short lines.
  long lines.
  none of these.

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Power Systems
A sort line with R/X ratio 1, the zero regulation is obtained when the power factor of the load is

 0.5
 0.707 leading
 unity
 0 leading

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Power Systems
The steam power plant efficiency can be improved by

 using large quantity of water.
 burning large amount of coal.
  using high temperature and high pressure steam.
 decreasing the load on the plant.

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Power Systems
A power station has a maximum demand of 15000 kW. The annual load factor is 50% and plant capacity factor is 40%. What is the reserve capacity of the plant?

 3750 kW
 7500 kW
 3000 kW
 6000 kW

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Power Systems
The term self GMD is used to calculate

 capacitance
 inductance
 resistance
 both 1 and 2

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Power Systems
Nuclear fission means

  graphite.
  combination of two light nuclei.
  breaking up of nuclear of heavy atoms into nearly equal parts.
  moderator.

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