When will a slip-ring induction motor run at super synchronous speed?

When will a slip-ring induction motor run at super synchronous speed?

A. If a voltage is injected in the rotor circuit in phase opposition to the rotor induced emf.
B. If an emf is injected in the rotor circuit in phase with the rotor induced emf.
C. If motor is coupled with active load.
D. If motor is coupled with passive load.

Show Answer

Answer: A

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