Power Systems
Advantages of per unit system is/are

 It has units for all quantities
 No units for any quantity
 Need of transformation ratio
All of these

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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 in temperature between inlet and outlet.
  change of enthalpy between inlet and outlet.

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