railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Three Phase Induction Motor Induction Motor Torque
The rotor impedance of a slip ring induction motor is (0.1 + j0.6) Ω/ph. The resistance/ph to be inserted into rotor to get maximum torque at starting should be
1
0.1 Ω
2
0.3 Ω
3
0.4 Ω
4
0.5 Ω