B. A 180 V, dc shunt motor drives a constant-torque load at a speed of 1600 rev/min. The armature and field resistances are 2 ohms and 100 ohms respectively. The motor draws a line current of 8.7 A. Assume that a resistance is added in the field circuit to reduce the field current by 10%. Calculate the armature current, motor speed, the value of the added resistance, and the extra field losses. 15)
B. A 180 V, dc shunt motor drives a constant-torque load at a speed of 1600 rev/min. The armature and field resistances are 2 ohms and 100 ohms respectively. The motor draws a line current of 8.7 A. Assume that a resistance is added in the field circuit to reduce the field current by 10%. Calculate the armature current, motor speed, the value of the added resistance, and the extra field losses. 15)
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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Question
![B. A 180 V, dc shunt motor drives a constant-torque load at a speed of 1600 rev/min. The armature
and field resistances are 2 ohms and 100 ohms respectively. The motor draws a line current of 8.7
À. Assume that a resistance is added in the field circuit to reduce the field current by 10%.
Calculate the armature current, motor speed, the value of the added resistance, and the extra field
losses.
15)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3fee7aa6-aec3-4de2-b9c5-a5fad632da4d%2F5e8917fe-471e-43d7-843f-8e78bac46db9%2F9xo3im_processed.jpeg&w=3840&q=75)
Transcribed Image Text:B. A 180 V, dc shunt motor drives a constant-torque load at a speed of 1600 rev/min. The armature
and field resistances are 2 ohms and 100 ohms respectively. The motor draws a line current of 8.7
À. Assume that a resistance is added in the field circuit to reduce the field current by 10%.
Calculate the armature current, motor speed, the value of the added resistance, and the extra field
losses.
15)
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