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A 3-phase, 400 V, 50 Hz delta connected induction motor has power factor of 0.35 when delivering 30% of its load. If it is star connected, then its?

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A 3-phase, 400 V, 50 Hz delta connected induction motor has power factor of 0.35 when delivering 30% of its load. If it is star connected, then its?

(a) p.f. increased and the stator current decreases

(b) p.f. worsened and the stator current decreases

(c) p.f. increased,and the stator current increases

(d) p.f. does not change,and the stator current increase

I have been asked this question in homework.

My enquiry is from Power Factor Control of Three Phase Induction Motors in chapter Induction Machines of Electrical Machines

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Right answer is (a) p.f. increased and the stator current decreases

The best explanation: In star connection, resistance decrease than delta connected.

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