Q2: The armature and field resistance of a 220 V DC series motor is 0.15 ohm and 0.1 ohm respectively. It runs at a speed of 1000 rpm when connected to rated voltage drawing a current of 30 A. If an external resistance of 1 ohm is inserted in series with the motor, calculate the new steady state armature current and the speed. Assume the torque is proportional to the square of the speed (To N)

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Q2: The armature and field resistance of a 220 V DC series motor is 0.15 ohm and
0.1 ohm respectively. It runs at a speed of 1000 rpm when connected to rated
voltage drawing a current of 30 A. If an external resistance of 1 ohm is inserted in
series with the motor, calculate the new steady state armature current and the
speed. Assume the torque is proportional to the square of the speed (To N)
Transcribed Image Text:Q2: The armature and field resistance of a 220 V DC series motor is 0.15 ohm and 0.1 ohm respectively. It runs at a speed of 1000 rpm when connected to rated voltage drawing a current of 30 A. If an external resistance of 1 ohm is inserted in series with the motor, calculate the new steady state armature current and the speed. Assume the torque is proportional to the square of the speed (To N)
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