Of a shunt excited DA generator; Excitation winding internal resistance R = 2.5 e Armature winding internal resistance Ra = 0.5 N A rheostat has been placed in the excitation circuit to keep the end voltage of the machine constant at Va = 30 V. Machine www Voltage magnetization induced in the armature while operating at n = 1400 rpm at If = 7 A excitation current It is determined as Ea = 30 V from its characteristic. According to this; %3D wwmu www a) End voltage Va = 30 V, excitation current If = 7 A, when the number of revolutions is n = 1400 d/d, What is the resistance of the rheostat with the %3D ww mw power supplied to the load? b) Spindle revolutions are reduced to n = 1000 d/d. In this case Va = 30 V and Ea = 37 V constant to what value should the rheostat be set to remain? Calculate the power given to the load in this new case. www ww m ww w mh m wmw m w

Of a shunt excited DA generator; Excitation winding internal resistance R = 2.5 e Armature winding internal resistance Ra = 0.5 N A rheostat has been placed in the excitation circuit to keep the end voltage of the machine constant at Va = 30 V. Machine www Voltage magnetization induced in the armature while operating at n = 1400 rpm at If = 7 A excitation current It is determined as Ea = 30 V from its characteristic. According to this; %3D wwmu www a) End voltage Va = 30 V, excitation current If = 7 A, when the number of revolutions is n = 1400 d/d, What is the resistance of the rheostat with the %3D ww mw power supplied to the load? b) Spindle revolutions are reduced to n = 1000 d/d. In this case Va = 30 V and Ea = 37 V constant to what value should the rheostat be set to remain? Calculate the power given to the load in this new case. www ww m ww w mh m wmw m w

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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