ISRO Electrical Engineering (EE) 2014 - Question 11

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In alternator, during hunting when the speed becomes super synchronous, the damper bars develop

  • A. reluctance torque
  • B. pseudo-stationary torque
  • C. eddy current torque
  • D. induction generator torque

Answer: D. induction generator torque

Explanation: Above synchronous speed the damper winding acts as an induction generator and produces a braking torque.

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