Q.An induction motor can run at synchronous speed when

  • AIt is run on load
  • BOn full load
  • CEMF is  injected in the rotor circuit
  • DOn voltage higher than the rated voltage
Correct Answer : (C)

EMF is  injected in the rotor circuit

Hints :

An induction motor can run at synchronous speed when EMF is  injected in the rotor circuit.

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