QUESTION 4 [19] A sludge pump motor, connected in delta, operates at a lagging power factor of 0.81 when receiving 28kW,
Posted: Tue Jul 12, 2022 8:41 am
- Question 4 19 A Sludge Pump Motor Connected In Delta Operates At A Lagging Power Factor Of 0 81 When Receiving 28kw 1 (153.49 KiB) Viewed 33 times
QUESTION 4 [19] A sludge pump motor, connected in delta, operates at a lagging power factor of 0.81 when receiving 28kW, supplied with 3-phase, 400V. According to the specification the motor has a stator iron loss of 1kW and a per phase resistance of 0.802 while the windage and friction losses are estimated to be 750W. If the motor has a slip of 5%. determine the: 4.1 Stator copper loss 4.2 Synchronous power 4.3 Rotor copper loss 4.4 Rotor power Balanced 4.5 Output power 4.6 Efficiency of the motor Walter Sisulu University