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A 440 V, 60 Hz, 6 poles wye connected 3-phase induction motor draws a power input of 85 kW with a line current of 120 A. The core loss is 2.5 kW, F& WL is 1.5 kW. The stator’s resistance between two terminals is 0.4 Ω. Calculate the efficiency of this motor if it runs at a slip of 2.5%

A 440 V, 60 Hz, 6 poles wye connected 3-phase induction motor draws a power input of 85 kW with a line current of 120 A. The core loss is 2.5 kW, F& WL is 1.5 kW. The stator’s resistance between two terminals is 0.4 Ω. Calculate the efficiency of this motor if it runs at a slip of 2.5%

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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  1. A 440 V, 60 Hz, 6 poles wye connected 3-phase induction motor draws a power input of 85 kW with a line current of 120 A. The core loss is 2.5 kW, F& WL is 1.5 kW. The stator’s resistance between two terminals is 0.4 Ω. Calculate the efficiency of this motor if it runs at a slip of 2.5%
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