Power Systems
Which of following power plants will take long period in erection and installation

 Nuclear.
 Thermal.
 Gas turbine.
 Hydro Power Plant

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Power Systems
In a biased differential relay the bias is defined as the ratio of

  number of turns of restraining and operating coil.
  fault current and operating coil current.
  fault current and restraining coil current.
  operating coil current and restraining coil current.

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