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A 440-V, 60-Hz, 4-pole, Delta-connected, three-phase induction motor has the following parameters in ohms/phase referred
Posted: Fri May 20, 2022 11:41 pm
by answerhappygod
- A 440 V 60 Hz 4 Pole Delta Connected Three Phase Induction Motor Has The Following Parameters In Ohms Phase Referred 1 (47.74 KiB) Viewed 13 times
A 440-V, 60-Hz, 4-pole, Delta-connected, three-phase induction motor has the following parameters in ohms/phase referred to the stator circuit: R1 = 0.3 Ohm, X1 = 0.9 Ohm, R2 = 0.6 Ohm, X2 = 0.9 Ohm, Rc = 150 Ohm, Xm = 60 Ohm. The rotational loss is 4% of the power developed. If the motor runs at 4% slip, Determine: (a) Rotor Speed (b) Stator current (c) Power factor (d) Efficiency (e) the slip at which the motor develops maximum torque (f) If the rotational losses are kept constant at 500 W, what is the required rotor current to operate the motor at maximum efficiency?