A 6-pole, 60 Hz, wye connected, 40 horsepower, 1140 rpm induction motor draws 33.5 kW of power from a 3-phase source when operating at rated conditions. At rated conditions, the motor has the following losses: stator copper loss = 1000 W core loss = 500 W a) What is the efficiency of the motor? b) What is the rotor copper loss? c) What is the mechanical loss? d) What is the torque developed by the motor? HANDWRITTEN PLEASE Please all subpart is compulsory for like this please

A 6-pole, 60 Hz, wye connected, 40 horsepower, 1140 rpm induction motor draws 33.5 kW of power from a 3-phase source when operating at rated conditions. At rated conditions, the motor has the following losses: stator copper loss = 1000 W core loss = 500 W a) What is the efficiency of the motor? b) What is the rotor copper loss? c) What is the mechanical loss? d) What is the torque developed by the motor? HANDWRITTEN PLEASE Please all subpart is compulsory for like this please

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 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

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A 3-phase, 4 pole, 230 V, 60 Hz wound-rotor induction motor has both its stator and rotor connected in Y. The rotor has half as many turns per phase as the stator. If the rotor is running at 1725 rpm, Rr is 0.075 ohms and Xs = 0.375 ohms, determine the torque developed by the motor. Answer: 27.543 lb ft
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