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MHT CET2012PhysicsElectromagnetic Induction

The back emf in a DC motor is maximum when,

Options

  1. Athe motor has picked up maximum speed
  2. Bthe motor has just started moving
  3. Cthe speed of motor is still on increase
  4. Dthe motor has just been switched off

Correct answer

A. the motor has picked up maximum speed

Step-by-step solution

The value of back emf, e W . So, back emf is maximum when the motor has picked up the maximum speed.

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