Power Systems
A generator has a rating of 10 MVA, 5 kV has a reactance of 0.02 pu. Find the reactance at a new base values of 50 MVA, 10 kV?

 0.025
 0.25
 0.05
 0.02

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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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