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A 400 V series motor has a field resistance of 0.02 ohm and an armature resistance of 0.1 ohm. The motor takes 30 A of current at 1000 rpm while developing full load torque. What is the motor speed when this motor develops 60 % of full load torque and the shunt is shunted by a resistor of 0.03?

A 400 V series motor has a field resistance of 0.02 ohm and an armature resistance of 0.1 ohm. The motor takes 30 A of current at 1000 rpm while developing full load torque. What is the motor speed when this motor develops 60 % of full load torque and the shunt is shunted by a resistor of 0.03?

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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A 400 V series motor has a field resistance of 0.02 ohm and an armature resistance of 0. 1 ohm. The motor takes 30 A of current at 1000 rpm while developing full load torque. What is the motor speed when this motor develops 60 % of full load torque and the shunt is shunted by a resistor of 0.03?
Transcribed Image Text:A 400 V series motor has a field resistance of 0.02 ohm and an armature resistance of 0. 1 ohm. The motor takes 30 A of current at 1000 rpm while developing full load torque. What is the motor speed when this motor develops 60 % of full load torque and the shunt is shunted by a resistor of 0.03?
The armature and shunt field resistance of a 500 V shunt motor are 0.1 and 100 ohms respectively. A resistance of 1.4 ohm is connected in series with the armature and it runs at 1000 r.p.m., taking a current of 75 A. What must be the resistance of divertor connected across the armature to reduced the speed to 600 r.p.m. Assume armature current to be constant.
Transcribed Image Text:The armature and shunt field resistance of a 500 V shunt motor are 0.1 and 100 ohms respectively. A resistance of 1.4 ohm is connected in series with the armature and it runs at 1000 r.p.m., taking a current of 75 A. What must be the resistance of divertor connected across the armature to reduced the speed to 600 r.p.m. Assume armature current to be constant.
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