A 7.5 kW, 400 V, 4-pole induction motor gave the following test results:
![1238_0274d306-9a51-4068-a9aa-4c3fad36bb0f.png](https://secure.tutorsglobe.com/CMSImages/1238_0274d306-9a51-4068-a9aa-4c3fad36bb0f.png)
The effective ac resistance between the stator terminals is 2.2 W and the full-load slip is 4%. Determine:
(a) the parameters of the per phase circuit model.
(b) the stator current and its pf when the motor is delivering full-load.
(c) the efficiency in part (b).