The no-load speed of a 240 V Dc shunt motor is 800 r/min and the armature current is 2A. Determine the resistance in series with the field so that the speed of the machine is increased to 950 r/min when the armature current is 30 A. The shunt circuit and armature resistances are 160 ohms and 0.4 ohm respectively. Assume the flux being directly proportional to the field current.
The no-load speed of a 240 V Dc shunt motor is 800 r/min and the armature current is 2A. Determine the resistance in series with the field so that the speed of the machine is increased to 950 r/min when the armature current is 30 A. The shunt circuit and armature resistances are 160 ohms and 0.4 ohm respectively. Assume the flux being directly proportional to the field current.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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