Question

03. A 220V single phase induction motor had an input current of 8 amps before the centrifugal switch operated. At that stage the motor operated with a lagging power factor of 0.8. The current in the main winding was 5 amps, and it was lagging the line voltage by 40 degrees. a). Determine the magnitude and phase angle of the current in the auxiliary winding Show your work) b). Draw a neat and clear phasor diagram showing the line current, main winding current, the auxiliary winding current, and the reference phasor. o). Calculate the motor input power (approximate) after the centrifugal switch operated

Answer 1

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