Which of the following losses occurring in a dc machine varies significantly with the load?

  • AArmature copper loss
  • BShunt field copper loss
  • CMagnetic or iron losses
  • DMechanical losses
Correct Answer : (A)

Armature copper 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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