Power Systems
Steady state stability of a power system is improved by

 using double circuit line instead of single circuit line
 single pole switching
All of these
 decreasing generator inertia

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

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Power Systems
Advantages of shunt compensation is/are

 smooth voltage regulation is possible by controlling excitation
 single unit can be used as both capacitance and inductor by adjusting the excitation
 It requires less maintanance
All of these

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