The magnetic pole on rotor of alternator are of

The magnetic pole on rotor of alternator are of:

  1. Salient type construction
  2. Non-salient type construction
  3. Both of these
  4. None of these

Correct answer: 3. Both of these

Explanation: The magnetic poles on the rotor can be of either salient or non-salient construction.

Salient construction: The term salient implies “protruding” or “sticking out”. Such a salient pole is a magnetic pole that sticks out from the surface of the rotor. Salient construction is used for rotors with four or more poles.

Non-salient construction: Nonsalient pole is a magnetic pole constructed flush with the surface of the rotor. Such rotor construction is normally used for two- and four-pole rotors.

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