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Power Systems

Power Systems
Demand factor of a plant is

 0
 less than 1
 1
 greater than 1

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Power Systems
When series reactor is used in generating stations, the fault current magnitude is

 any of the above
 increased
 reduced
 remains unaffected

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Power Systems
The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be

 400 Ω
 420 Ω
 210 Ω
 840 Ω

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Power Systems
Main bus bar protection scheme is /are

  differential protection.
  none of these.
  both fault bus and differential protection.
  fault bus protection.

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjust vanes is

  Francis.
  Impeller.
  Pelton.
  Kaplan.

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Power Systems
Graphite is use din nuclear plant as a / an

 coolant.
 electrode.
  moderator.
 fuel.

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