Power Systems
Zero voltage regulation is possible only for

 leading power factor
 unity power factor
 lagging power factor
All of these

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP