The rotor current at start of a three-phase, 460 V, 1710 rpm, 60
Hz, 4-pole, squirrelcage
induction motor is six times the rotor current at full load. Determine:
1. the starting torque as percent of full load torque.
2. the slip and speed at which the motor develops maximum torque.
3. the maximum torque developed by the motor as percent of full load torque.