A 3-phase AC motor has a power factor of 0.8 and an efficiency of 90%. If the load current is 20 A per phase, what is the total power input to the motor?
Q1. A 3-phase AC motor has a power factor of 0.8 and an efficiency of 90%. If the load current is 20 A per phase, what is the total power input to the motor?
Answer: 4 kW
Explanation: Using the power input formula, the total power input is calculated from P_input = P_out / η, giving 4 kW