Power Systems
In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%.

 48.36 kV
 83.76 kV
 20 kV
 52.84 kV

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Power Systems
In Rankine cycle, the work output from a turbine is given by

  change in internal energy between inlet and outlet.
  change of enthalpy between inlet and outlet.
  change in temperature between inlet and outlet.
  change of entropy between inlet and outlet.

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Power Systems
Advantages of shunt compensation is/are

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

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