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
  reduced voltage is applied to the stator.
  resistance is inserted in the rotor.

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Electrical Machines
DC Motor

  dc shunt with armature resistance control.
  dc series motor.
  dc compound motor.
  dc shunt motor with field weakening.

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