Electrical Machines
The principle of operation of a 3 - Φ induction motor is almost similar to that of

  synchronous motor.
  repulsion start induction motor.
  transformer with secondary short circuited.
  capacitor start induction motor.

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Electrical Machines
Due to magnetic saturation, the flux per pole in a DC machine without brush shift

 increases in generators but decreases in motor with load.
  decreases in both generators and the motors with load.
 increases in both the generators and the motors with load.
 decreases in generators and increases in motor with load.

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