engineering recuitment JVVNL Technical Helper 2022 Mock Test Electrician and Wireman Electrical Machines DC Motors
What is the back emf 'E' of the Shunt DC motor functioning with a terminal Voltage of 'V' and Armature current 'I' and Armature resistance 'R'?
1
E = V - IR
2
E = V + IR
3
E = IR/V
4
E = V/IR
5
E = V × IR