A Y-Y connected 105 Hp, 3-phase 60 Hz, 4-pole, 270 V squirrel cage induction motor has a rotor speed of 1,600 rpm and a rotor resistance per phase of 0.15 ohm and a blocked rotor reactance per phase of 0.6 ohm. The stator copper and core losses amount to 8% of the total rated output of the motor. a. Determine the over-all efficiency of the machine. b. Calculate the speed at which the maximum torque will be developed by the motor.

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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.