railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Three Phase Induction Motor Induction Motor Torque
The maximum starting torque of a 3-phase induction motor occurs when:
1
Rotor resistance is \(\frac{3}{4}\)th of the rotor reactance
2
Rotor resistance is \(\frac{1}{2}\)th of the rotor reactance
3
Rotor resistance is equal to the rotor reactance
4
Rotor resistance is \(\frac{1}{4}\)th of the rotor reactance