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The power input to the rotor of a 400V, 50Hz, 6 pole, 3-phase induction motor is 20kW. The slip is 3%. Calculate (i) frequency of

The power input to the rotor of a 400V, 50Hz, 6 pole, 3-phase induction motor is 20kW. The slip is 3%. Calculate

(i) frequency of the rotor currents

(ii) rotor speed

(iii) rotor copper losses

(iv) rotor resistance per phase if rotor current is 60A.

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