The speed and torque of induction motors can be varied by which of the following means: 1) Stator voltage control 2) Rotor voltage control 3) Frequency control 4) All of these

1 Answer

Answer :

All can off them can control speed and torque of induction motor.This is because  increased supply frequency increases synchronous speed  which will definetly affect torque and speed .

.Both stator and rotor  voltage control are proportional to torque and slip.

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