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Power Systems

Power Systems
Rating of fuse wire is expressed in

  Watts.
  Mho.
 ÃŽÂ©.
  Ampere.

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Power Systems
Maximum power capacity of a transmission line can be increased by

 nether 1 nor 2
 increasing voltage level
 decreasing reactance value
 either 1 or 2

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 copper loss
 corona loss
 voltage drop across the line
 surge impedance of the line

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Power Systems
Efficiency of thermal power plant can be taken as

  generator efficiency.
  turbine efficiency.
  product of efficiencies of all stages.
  efficiency of thermal cycle.

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Power Systems
Which of the following grounding is not practically preferred for protection of equipments?

 resistance grounding
All of these
 isolated grounding
 reactance grounding

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Power Systems
A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time?

 -0.76 Hz
 -0.85 Hz
 0.85 Hz
 0.76 Hz

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