Given: 275 kW, 3-phase, 6,600 V was tested with the following results. OCT in volts : 5600 : 46.5 With the stator short circuited , a field current of 50 A yields a 6600 7240 8100 SCT in Amps 58 67.5 96 short circuit current of 35 A. Determine by MMF Method the following at unity power factor FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE AT NO LOAD= AMPS 2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF ARMATURE REACTION== AMPS 3. Field current required to produce rated voltage at full load 4. no-load voltage= 5. %VR

Given: 275 kW, 3-phase, 6,600 V was tested with the following results. OCT in volts : 5600 : 46.5 With the stator short circuited , a field current of 50 A yields a 6600 7240 8100 SCT in Amps 58 67.5 96 short circuit current of 35 A. Determine by MMF Method the following at unity power factor FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE AT NO LOAD= AMPS 2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF ARMATURE REACTION== AMPS 3. Field current required to produce rated voltage at full load 4. no-load voltage= 5. %VR

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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