Consider the single-phase cap-start motor shown in Figure 1, a four pole, 60 Hz machine. The centrifugal switch opens when the rotor speed is 2/3rds the synchronous speed. a. Sketch a torque-speed curve demonstrating the expected behavior of this machine over a rotor speed range from zero to synchronous speed. b. Size the reactance, Xc, such that maximum torque is achieved at start-up. V •Rm I'm Ra Main winding: R = 900 m2 and X₂ = 1.1 2. Auxiliary winding: R₂ = 1.5 Q, X₂ = 1.9 2. Xa Xe Figure 1 Schematic diagram for a capacitor-start motor.

Consider the single-phase cap-start motor shown in Figure 1, a four pole, 60 Hz machine. The centrifugal switch opens when the rotor speed is 2/3rds the synchronous speed. a. Sketch a torque-speed curve demonstrating the expected behavior of this machine over a rotor speed range from zero to synchronous speed. b. Size the reactance, Xc, such that maximum torque is achieved at start-up. V •Rm I'm Ra Main winding: R = 900 m2 and X₂ = 1.1 2. Auxiliary winding: R₂ = 1.5 Q, X₂ = 1.9 2. Xa Xe Figure 1 Schematic diagram for a capacitor-start motor.

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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