Describe with the aid of a phasor diagram the behaviour of a synchronous motor starting from no- load to the pull-out point. What is the output corresponding to a maximum input to a 3-p delta- connected 250-V, 14.92 kW synchronous motor when the generated e.m.f. is 320 V? The effective resistance and synchronous reactance per phase are 0.3 Q and 4.5 Q respectively. The friction, windage, iron and excitation losses total 800 watts and are assumed to remain constant. Give values for (i) output (ii) line current (iii) p.f. / 23:53 /

Describe with the aid of a phasor diagram the behaviour of a synchronous motor starting from no- load to the pull-out point. What is the output corresponding to a maximum input to a 3-p delta- connected 250-V, 14.92 kW synchronous motor when the generated e.m.f. is 320 V? The effective resistance and synchronous reactance per phase are 0.3 Q and 4.5 Q respectively. The friction, windage, iron and excitation losses total 800 watts and are assumed to remain constant. Give values for (i) output (ii) line current (iii) p.f. / 23:53 /

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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