Can you define the working principle of a DC motor / DC generator, with a schematic diagram showing conditions of Max Emf Development across the Armature of the DC machine?
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Explanation:
As the armature rotates, a voltage is generated in its coils. In the case of a generator, the emf of rotation is called the Generated emf or Armature emf and is denoted as Er = Eg. In the case of a motor, the emf of rotation is known as Back emf or Counter emf and represented as Er = Eb.
The expression for emf is same for both the operations, i.e., for Generator as well as for Motor.
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