Q#4: Obtain an expression for the condition of maximum torque of 3-phase induction motor. Sketch the torque- slip curves for several values of rotor circuit resistance and indicate the condition for maximum torque to be obtained at starting. If the motor has a rotor resistance of 0.03 2 and a standstill reactance of 0.07 2, what must be the value of the total resistance of a starter for the rotor circuit for maximum torque to be exerted at starting?

Q#4: Obtain an expression for the condition of maximum torque of 3-phase induction motor. Sketch the torque- slip curves for several values of rotor circuit resistance and indicate the condition for maximum torque to be obtained at starting. If the motor has a rotor resistance of 0.03 2 and a standstill reactance of 0.07 2, what must be the value of the total resistance of a starter for the rotor circuit for maximum torque to be exerted at starting?

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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Question

Q#4: Obtain an expression for the condition of maximum torque of 3-phase induction motor. Sketch
the torque- slip curves for several values of rotor circuit resistance and indicate the condition for
maximum torque to be obtained at starting.
If the motor has a rotor resistance of 0.03 2 and a standstill reactance of 0.07 2, what must be
the value of the total resistance of a starter for the rotor circuit for maximum torque to be
exerted at starting?

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