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In ac drives, stable operating point is when

In ac drives, stable operating point is when Correct Answer Load torque is equal to electromagnetic torque

  • In ac drives, stable operating point is when load torque is equal to electromagnetic torque
  • Criteria for the steady state stability is for a decrease in the speed the motor torque must exceeds the load torque and for increase in speed the motor torque must be less than the load torque.
  • To check the stability at an operating point of the motor, if an increase in speed brings greater increase in load torque than the motor torque, the speed will tend to decrease and return to its original value, so operating point will be a stable point else operating point will be an unstable point.

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