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Power Systems

Power Systems
Surge tank is kept very close to the

 turbine
 spill way
 pen stock
 generator

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Power Systems
Electrostatic precipitators in thermal power plants are used for

All of these
 removal of ash from flue gas
 control flow rate
 remove moisture from the cole

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Power Systems
The arc voltage produced in an AC circuit breaker is always

 lagging the arc current by 90°.
 in phase opposition with the arc current.
  in phase with the arc current.
 leading the arc current by 90°.

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Power Systems
The skin effect of conductor will increase when

 diameter decrease
 frequency decrease
 resistivity decrease
All of these

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Power Systems
Recovery voltage in CB is equal to

  transient voltage.
  none of these.
  normal frequency 50 Hz rms voltage.
  arcing period voltage.

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Power Systems
The generating station suitable to operate as peak load plant is

 Nuclear power station.
 Power station.
  Pumped storage.
 Thermal power station.

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