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4. A 200 V, de series motor takes 20 A when running at 1000 rpm. Calculate the speed at which the motor will run and the current taken from the supply if the field is shunted by a resistance equal to the field resistance and field is reduced to 70% .Assume the load torque remains the same. Armature resistance = 0.502, field resistance = 0.2 22.

4. A 200 V, de series motor takes 20 A when running at 1000 rpm. Calculate the speed at which the motor will run and the current taken from the supply if the field is shunted by a resistance equal to the field resistance and field is reduced to 70% .Assume the load torque remains the same. Armature resistance = 0.502, field resistance = 0.2 22.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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4. A 200 V, dc series motor takes 20 A when running at 1000 rpm. Calculate the speed at which the motor will run and the current taken from the supply if the field is shunted by a resistance equal to the field resistance and field is reduced to 70% .Assume the load torque remains the same. Armature resistance = 0.502, field resistance = 0.2 2.
Transcribed Image Text:4. A 200 V, dc series motor takes 20 A when running at 1000 rpm. Calculate the speed at which the motor will run and the current taken from the supply if the field is shunted by a resistance equal to the field resistance and field is reduced to 70% .Assume the load torque remains the same. Armature resistance = 0.502, field resistance = 0.2 2.
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