Q5. The magnetization curve for a certain self-excited, 125-V,50-kW, 1750 r/min shunt generator is shown in Figure 1, Theno-load voltage with the rheostat shorted is 156 V. Determine:[12](i) field-circuit resistance(ii) field-rheostat setting that will provide a no-load voltage of140 V(iii) Armature voltage if the rheostat is set lo 14.232(iv) Field-rheostat setting that will cause critical resistance(v) Armature voltage at 80 percent rated speed, and therheostat shorted(vi) Rheostat setting required to obtain a no-load armaturevoltage of 140 V at 1750 rpm if the shunt field isseparately excited from a 120-V DC source1750 rfmin160Crikicalresistance140lineS0% speed120100Field resistance LineRheostat shorted604020Shunt-Field Carrent Iy (A)FIGURE 1Exampie 12.1Generated EMF E (V)

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Q5. The magnetization curve for a certain self-excited, 125- V,50-kW, 1750 r/min shunt generator is shown in Figure 1, The no-load voltage with the rheostat shorted is 156 V. Determine: [12] (i) field-circuit resistance (ii) field-rheostat setting that will provide a no-load voltage of 140 V (iii) Armature voltage if the rheostat is set lo 14.232

Q5. The magnetization curve for a certain self-excited, 125- V,50-kW, 1750 r/min shunt generator is shown in Figure 1, The no-load voltage with the rheostat shorted is 156 V. Determine: [12] (i) field-circuit resistance (ii) field-rheostat setting that will provide a no-load voltage of 140 V (iii) Armature voltage if the rheostat is set lo 14.232

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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