Question

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For a 440/220V single-phase transformer if the power input to the HV
winding is 80W. The low-voltage winding is kept open. The power factor
of the no-load current is 0.3 lagging. Determine active current, reactive
current and no load current.​

Answer 1

Answer:

The stator otu 415 v, 50 Hz, 6 pole 970 rpm 3 phase induction motor is fed with normal voltage.

The frequency of the rotor induced emf when the motor is running 900rpm