Power Systems
A sort line with R/X ratio 1, the zero regulation is obtained when the power factor of the load is

 0.5
 unity
 0.707 leading
 0 leading

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

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

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