torque. Ans[40.5 N.m, 63.6 N.m, 1333r.p.m] The resistance and standstill reactance of each phase of a 3-phase induction motor with star- connected rotor are 0.062 and 0.42 respectively. The full-load slip is 4% . Calculate the resistance per phase of a star-connected rheostat which, when connected to the rotor circuit will give a pull- out torque at one haif of the fuii ioad speed. What is then the power factor? Ans[0.1482,0.707Lag] A 3-phase induction motor has a 4-pole star-connected ototr

torque. Ans[40.5 N.m, 63.6 N.m, 1333r.p.m] The resistance and standstill reactance of each phase of a 3-phase induction motor with star- connected rotor are 0.062 and 0.42 respectively. The full-load slip is 4% . Calculate the resistance per phase of a star-connected rheostat which, when connected to the rotor circuit will give a pull- out torque at one haif of the fuii ioad speed. What is then the power factor? Ans[0.1482,0.707Lag] A 3-phase induction motor has a 4-pole star-connected ototr

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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