Power Systems
Gas turbine power plants for maximum efficient may have

  All of above.
 Reheating.
 Multistage compression.
 Heat exchangers.

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

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

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