railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines DC Motor

The armature resistance of a 220 volt DC machine is 0.5 ohm. What is the value of the back EMF when the machine functions as a motor if the full load armature current is 25 amps?

1

209 V

2

207.5 V

3

207 V

4

210 V

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