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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: Sat May 21, 2022 12:24 am
by answerhappygod
- A 440 V 60 Hz 4 Pole Delta Connected Three Phase Induction Motor Has The Following Parameters In Ohms Phase Referred 1 (41.9 KiB) Viewed 22 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?