engineering recuitment MP Vyapam Sub Engineer Mock Test 2024 Electrical Machines DC Motor Back EMF

A 230 V dc motor has an armature circuit resistance of 0.6 Ω. If the full load armature current is 30 A and the no-load armature current is 4 A, the change in back emf from no load to full load will be

1
32.2 V
2
64 V
3
1.5 V
4
15.6 V
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