The most economical method of electric braking is 

  • APlugging 
  • BDynamic braking with separate excitation
  • CDynamic braking with self-excitation
  • DRegenerative braking
Correct Answer : (D)

Regenerative braking

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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