A four-pole, Y-connected synchronous generator has a per-phase synchronous reactance of 0.8 ohms, 60 hertz, and 420 volts linevoltage. At full load, the armature current is equal to 40 amperes. This generator has core losses of 1.2 kW. Neglect armatureresistance. Calculate:• Speed of rotation of this generator in radians per second?• Induced voltage at the armature of this generator if the load power factor is a) 0.7 lagging b) unity c) 0.7 leading• What is the efficiency of this generator if it operates at 0.7 lagging pf?• How much shaft torque must be applied by the prime mover at full load and still at 0.7 lagging pf?

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Answered: A four-pole, Y-connected synchronous…

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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