A four pole three phase 50hz induction motor has a full load slip of 4.5% the rotor winding has a resistance of 0.2ohm phase and a standstill reactance of 1.2ohm per phase the rotor is star connected and at standstill emf between two slip rings is 150v on open circuit for the full load condition
Determine 1) emf induced in each rotor phase.
2) rotor impedance per phase.
3) rotor current and rotor pf assuming that slip ring are short circuited without any inclusion of extra resistance.
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