Q.Reluctance torque in rotating machines is present, when

  • Aair gap is not uniform
  • Breluctance seen by stator mmf varies
  • Creluctance seen by rotor mmf varies
  • Dreluctance seen by the working mmf varies
Correct Answer : (D)

reluctance seen by the working mmf varies

Hints :

Reluctance torque in rotating machines is present, when reluctance seen by the working mmf varies.

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