A series DC motor has a series-field winding of 25 turns per pole. Its armature resistance in 0.1 2, and itsfield resistance is 0.05 2. The magnetization curve expressed in terms of magneto-motiveforce versus theinternal generated voltage at 1000 RPM is given by the following table:EA (V)F (Amp.tums)50951502002122292432502532001000150020002500300035004000500Those values were taken at speed n= 1000 RPMWhen the motor is rotating at 900 RPM, with 220 V supply, and 100 Amp, its rotational losses are2000 Watt.What is the efficiency of this motor ?Select one:O a. % Efficiency 84.1 %b. % Efficiency = 74.5 %C. NoneO d. % Efficiency 91.2 %

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A series DC motor has a series-field winding of 25 turns per pole. Its armature resistance in 0.1 2, and its field resistance is 0.05 2. The magnetization curve expressed in terms of magneto-motiveforce versus the internal generated voltage at 1000 RPM is given by the following table: 150 200 212 229 243 250 253 EA (V) F (Amp.tums) 50 95 1000 1500 2000 2500 3000 3500 4000 500 Those values were taken at speed n= 1000 RPM 200 When the motor is rotating at 900 RPM, with 220 V supply, and 100 Amp, its rotational losses are 2000 Watt. What is the efficiency of this motor ? Select one: O a. % Efficiency 84.1 % b. % Efficiency = 74.5 % O c. None O d. % Efficiency 91.2 %

A series DC motor has a series-field winding of 25 turns per pole. Its armature resistance in 0.1 2, and its field resistance is 0.05 2. The magnetization curve expressed in terms of magneto-motiveforce versus the internal generated voltage at 1000 RPM is given by the following table: 150 200 212 229 243 250 253 EA (V) F (Amp.tums) 50 95 1000 1500 2000 2500 3000 3500 4000 500 Those values were taken at speed n= 1000 RPM 200 When the motor is rotating at 900 RPM, with 220 V supply, and 100 Amp, its rotational losses are 2000 Watt. What is the efficiency of this motor ? Select one: O a. % Efficiency 84.1 % b. % Efficiency = 74.5 % O c. None O d. % Efficiency 91.2 %

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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