Power Systems
Which of the following grounding is not practically preferred for protection of equipments?

 resistance grounding
All of these
 reactance grounding
 isolated grounding

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

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Power Systems
Per unit of any quantity is defined as

 base value of quantity /actual value of quantity in different units
 actual value of quantity /base value of quantity in different units
 base value of quantity /actual value of quantity in same units
 actual value of quantity /base value of quantity in same units

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