engineering recuitment PGCIL Junior Technician Trainee (Electrician) Mock Test 2023 Electrician and Wireman Electrical Machines DC Motors
A 250 V, 4-pole wave wound DC series motor has 600 conductors on its armature. It has a combined armature and field resistance of 0.75 Ohm. The motor draws a current of 40 A. Calculate the back emf.
1
230 V
2
250 V
3
240 V
4
220 V