single phase machines A 1-kW, 120-V, 60-Hz capacitor start motor has the following parameters for the main andauxiliary windings (at starting): Zmain = 4.82 + j 7.25 ohm (main winding) and Zaux = 7.95 + j 9.21ohm (auxiliary winding). (a) Find the magnitude and phase angles of the currents in the twowindings when rated voltage is applied to the motor under starting conditions. (b) Find the valueof starting capacitance that will place the main- and auxiliary winding currents in timequadrature at starting. (c) Repeat part (a) when the capacitance of part (b) is inserted in serieswith the auxiliary winding.

Given, P=1KW V=120V f=60Hz a)…

Find the magnitude and phase angles of the currents in the is applied to the motor under starting conditions. (b) Find they t will place the main- and auxiliary winding currents in epeat part (a) when the capacitance of part (b) is inserted in s

Find the magnitude and phase angles of the currents in the is applied to the motor under starting conditions. (b) Find they t will place the main- and auxiliary winding currents in epeat part (a) when the capacitance of part (b) is inserted in s

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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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

single phase machines

A 1-kW, 120-V, 60-Hz capacitor start motor has the following parameters for the main and
auxiliary windings (at starting): Zmain = 4.82 + j 7.25 ohm (main winding) and Zaux = 7.95 + j 9.21
ohm (auxiliary winding). (a) Find the magnitude and phase angles of the currents in the two
windings when rated voltage is applied to the motor under starting conditions. (b) Find the value
of starting capacitance that will place the main- and auxiliary winding currents in time
quadrature at starting. (c) Repeat part (a) when the capacitance of part (b) is inserted in series
with the auxiliary winding.

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