karterkupcake9866 karterkupcake9866

08-02-2024
Engineering

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An electric motor runs on a DC source of emf 200 V and draws a current of 10 A. If the efficiency is 40%, then the resistance of the armature is ____
(1) 5 Ω
(2) 12 Ω
(3) 120 Ω
(4) 160 Ω

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