9. A 3-0 induction motor has a synchronous speed of 250 r.p.m. and 4 per cent slip at full-load. The rotor has a resistance of 0.02 Q/phase and a standstill leakage reactance of 0.15 2/phase. Calculate (a) the ratio of maximum and full-load torque (b) the speed at which the maximum torque is devel- oped. Neglect resistance and leakage of the stator winding. |(a) 1.82 (b) 217 r.p.m.] (London University) 10. The rotor of an 8-pole, 50-Hz, 3-phase induction motor has a resistance of 0.2 Q/phase and runs at

9. A 3-0 induction motor has a synchronous speed of 250 r.p.m. and 4 per cent slip at full-load. The rotor has a resistance of 0.02 Q/phase and a standstill leakage reactance of 0.15 2/phase. Calculate (a) the ratio of maximum and full-load torque (b) the speed at which the maximum torque is devel- oped. Neglect resistance and leakage of the stator winding. |(a) 1.82 (b) 217 r.p.m.] (London University) 10. The rotor of an 8-pole, 50-Hz, 3-phase induction motor has a resistance of 0.2 Q/phase and runs at

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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Similar questions

2. Describe the Torque-Slip characteristics of a three phase induction motor.
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