Power Systems
The flow duration curve at a given head of a hydroelectric plant is used to determine

 diversity factor for the plant.
  total power available at the site.
 total units of energy available.
 load factory at the plant.

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Power Systems
The skin effect shows that

 current density is more at the surface of the condutor
 the distribution of AC current is uniform through the cross section of the conductor
 current density is lower at the surface of the condutor
 current density is more at the centre of the condutor

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

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