railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Electrician and Wireman Electrical Machines DC Motors
What is the basic difference that a four-point starter has in it when compared to a three-point starter is:
1
Field circuit is completed through starting resistance
2
Overcurrent release is connected in the supply line
3
Holding coil is removed from the shunt field circuit
4
The starting resistance is gradually cut out till the armature reaches the running position