A 3.3kV, 20-pole, 50Hz, star connected induction motor has a slip ring rotor of resistance 0.025Ω and standstill reactance of 0.28Ω per phase. The motor has a speed of 294 rpm when full load torque is applied. Compute (i) slip at maximum torque (ii) the ratio of maximum torque to full load torque. Neglect stator impedance.

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Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.