The variable loss in a dc shunt machine is 

  • AIron loss 
  • BShunt field loss
  • CArmature copper loss
  • DFriction and windage loss
Correct Answer : (C)

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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