A 460-V four-pole 75-hp 60-Hz Y-connected three-phase induction motor develops its full-load induced torque at 3.5 percent slip when operating at 60 Hz and 460 V. The per-phase circuit model impedances of the motor are R = 0.05892 Xy = 18 Ω Xy = 0.386 Ω X₁ = 0.32 2 Mechanical, core, and stray losses may be neglected in this problem (a) Find the value of the rotor resistance R₂. (b) Find TS, and the rotor speed at maximum torque for this motor. (c) Find the starting torque of this motor.

A 460-V four-pole 75-hp 60-Hz Y-connected three-phase induction motor develops its full-load induced torque at 3.5 percent slip when operating at 60 Hz and 460 V. The per-phase circuit model impedances of the motor are R = 0.05892 Xy = 18 Ω Xy = 0.386 Ω X₁ = 0.32 2 Mechanical, core, and stray losses may be neglected in this problem (a) Find the value of the rotor resistance R₂. (b) Find TS, and the rotor speed at maximum torque for this motor. (c) Find the starting torque of this motor.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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