Question 2 [8] A 3-phase (380V, 60 Hz) AC motor has 6 poles. It runs at 1100 rpm at full load. (a). Calculate the slip when the motor runs under the full-load.[4] (b). What is the range of the slips of the motor at different speeds? why? [2] (c). In the motor's normal operating range, when the slip decreases, how does the corresponding load torque change? [2] Answer: