Electrical Machines
The leakage reactance of a 3-phase alternator is determined by performing

 zero power factor and slip tests.
 open circuit and short circuit tests.
 short circuit and slip tests.
 open circuit and zero power factor tests.

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Electrical Machines
In a 3 - Φ induction motor

  power factor at starting is low as compared to that while running.
  none of them.
  power factor at starting is high as compared to that while running.
  power factor at starting in the same as that while running.

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