State principle of operation of DC generator.
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Principle of Operation of DC Generator: Working principle of DC generator is dynamically induced emf or electromagnetic induction. According to this principle, if flux is cut by conductor then an emf is induced in the conductor. The magnitude of the induced emf is calculated by Faraday’s 2nd law of electromagnetic induction and the direction is given by Lenz law OR Fleming’s right hand rule. In case of DC generator, when armature winding is rotated by the prime mover under the influence of magnetic poles, the flux is cut by armature conductor hence an emf is dynamically induced into armature winding.

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