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A 3 phase, 6 pole induction motor is rated at 400hz, 150v, 10h.p., 3% slip at rated power output. The windage and friction loss is 200w at rated speed. With the motor operating at rated voltage, frequency, slip, and power output, determine
(a) Rotor speed,
(b) Frequency of rotor current,
(c) Rotor copper losses,
(d) Power crossing the air gap,
(e) Output torque.
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Q. A certain 10-hp, 230-V motor has a rotational loss of 600 W, a stator copper loss of 350 W, a rotor copper loss of 350 W, and a stray load loss of 50 W. It is not known whether
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