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The direction of the torque an induction machine develops is

  • A.determined by the resistance of the rotor circuit
  • B.the same as the direction of the revolving field
  • C.opposite to the direction of the revolving field always
  • D.independent of the direction in which the field revolves

Answer: B

Correct answer: the same as the direction of the revolving field

The rotor is dragged after the field, always trying to catch up and never succeeding. Reversing the phase sequence reverses the field and the rotation with it, which is the standard means of reversing an induction machine.

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