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High starting current in DC motor

Provide the explanation explaining the reason for high starting current in the DC motor?

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In DC motors, Voltage equation is V=Eb-IaRa (where V=Terminal voltage, Eb = Back emf in Motor, Ia = Armature current, Ra = Armature resistance).In starting, Eb is zero. Thus, V=IaRa, Ia = V/Ra, here Ra is too less i.e, Ia will become extremely large.

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