railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Electrical Machines DC Motor DC Motor Types
A 4-pole, DC series motor has a wave connected armature with 200 conductors. The flux per pole is 20 m Wb when the motor is drawing 20 A from the supply. The back EMF of the motor is 200 V. Calculate the speed of the motor under this condition.
1
1893 rpm
2
1500 rpm
3
1374 rpm
4
1450 rpm