Answer 1:
The input power into the mother is 1.1 kW
The output power at the shaft is = 1.068 kW
Explanation:
Electrical power = input = Volt*current = 10*110 = 1100W = 1.1kW
Motor shaft power = output = Torque*angular speed
Angular speed = 2¶N/60 = (2*3.142*1000)/60 = 104.4 rad/sec
Ouput = 10.2*104.4 =1068W = 1.068kW
Answer 2: net power input = 0.032kW
Explanation: net power input = power input-power output.
Answer 3: energy transfered into the motor = 1100J in one sec
Energy transfer to shaft is 1068J in one sec
Explanation: power is energy expended per unit sec.