Q5 A 480-V, 60-Hz, Delta connected, four-pole synchronous generator. This generator has a synchronous reactance of 0.1 and an armature resistance of 0.0 15 ohm, At full load, the machine supplies 1200 A at 0.8 PF lagging and under this condition, the field current is 5,7 Amp. Under full load conditions, the friction and windage losses are 40 kW, and the core losses are 30 kW. Ignore any field circuit losses. Instead of 1200 amp with 0,8 power factor lagging, to provide 810 A with power factor of 0.97 lagging to the system, what will be the field current? Open circuit characteristics of the synchronous machine is given below. ( As a reminder Line currents are given and ALSO the question is taken from lecture notes)

Q5 A 480-V, 60-Hz, Delta connected, four-pole synchronous generator. This generator has a synchronous reactance of 0.1 and an armature resistance of 0.0 15 ohm, At full load, the machine supplies 1200 A at 0.8 PF lagging and under this condition, the field current is 5,7 Amp. Under full load conditions, the friction and windage losses are 40 kW, and the core losses are 30 kW. Ignore any field circuit losses. Instead of 1200 amp with 0,8 power factor lagging, to provide 810 A with power factor of 0.97 lagging to the system, what will be the field current? Open circuit characteristics of the synchronous machine is given below. ( As a reminder Line currents are given and ALSO the question is taken from lecture notes)

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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