SilverShroud1399 SilverShroud1399

20-02-2024
Engineering

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A DC motor runs by a source of EMF 200 V, drawing a current of 10 A. If the efficiency of the motor is 40%, what is the resistance of the armature coil?
a) 5 Ω
b) 10 Ω
c) 15 Ω
d) 20 Ω

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