Electrical Machines
In a star - delta starting of an IM

  line voltage is 57.7 % of stator voltage.
  applied voltage per stator phase is 57.7 % of a line volt
  resistance is inserted in the rotor.
  reduced voltage is applied to the stator.

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Electrical Machines
Where the shunt generators are widely used?

 Where the load is very high.
 Where voltage variation is needed over a wide load range.
  Where a constant voltage is required over a narrow load range.
 Where often load fluctuation is occurred.

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