In a dc machine, which loss increases rapidly with the increase in frequency of magnetic reversals? 

  • ACopper loss
  • BHysteresis loss
  • CEddy current loss
  • DMechanical loss
Correct Answer : (C)

Eddy current loss

Hints :

The current drawn by a 120 V dc motor with back emf of 110 V and armature resistance of 0.4 ohm is


With the increase in speed of a dc motor

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