Power Systems
Which of the following method is/are more reliable?

 Gauss-Siedel (GS) method
All of these
 Newton Raphson (NR) method
 Fast Decoupled Load Flow (FDLF) method

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

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

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