I need an experienced tutor to solve this, please avoid using Ai model s A 1100-V, 50-Hz delta-connected induction motor has a star-connected slip-ring rotor with a phase transformation ratio of 3.8. The rotor resistance and standstill leakage reac tance are 0.012 ohm and 0.25 ohm per phase respectively. Neglecting stator impedance and magnetising current determine. (i)the rotor current at start with sliprings shorted (ii)the rotor power factor at start with slip-rings shorted (iii)the rotor current at 4% slip with slip-rings shorted (iv)the rotor power factor at 4% slip with sliprings shorted (v)the external rotor resistance per phase required to obtain a starting current of 100 A in the stator supply lines.

I need an experienced tutor to solve this, please avoid using Ai model s A 1100-V, 50-Hz delta-connected induction motor has a star-connected slip-ring rotor with a phase transformation ratio of 3.8. The rotor resistance and standstill leakage reac tance are 0.012 ohm and 0.25 ohm per phase respectively. Neglecting stator impedance and magnetising current determine. (i)the rotor current at start with sliprings shorted (ii)the rotor power factor at start with slip-rings shorted (iii)the rotor current at 4% slip with slip-rings shorted (iv)the rotor power factor at 4% slip with sliprings shorted (v)the external rotor resistance per phase required to obtain a starting current of 100 A in the stator supply lines.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

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