field In a 15-hp, 240-V, 1200-rpm shunt DC motor, the armature resistance is 0.400 and resistance is 100 n. The magnetization curve of the motor is assumed to be linear in the operating region. Neglect mechanical losses and armature reaction. a) If the motor is running at 1200RPM at no-load and R 100 ohms, what will be the motor EMF?) b) If an additional adjustable resistance is inserted in series with the shunt field, and it can be varied between zero and 100 , find the possible range for no-load speed with the adjustable resistance connected. c) With the adjustable resistance in series with the shunt field set to zero, what is the speed regulation of the motor if its net output is 15HP? Note: the speed regulation is given by : Speed Regulation = (No Load Speed - Full Load Speed)/(No Load Speed)

field In a 15-hp, 240-V, 1200-rpm shunt DC motor, the armature resistance is 0.400 and resistance is 100 n. The magnetization curve of the motor is assumed to be linear in the operating region. Neglect mechanical losses and armature reaction. a) If the motor is running at 1200RPM at no-load and R 100 ohms, what will be the motor EMF?) b) If an additional adjustable resistance is inserted in series with the shunt field, and it can be varied between zero and 100 , find the possible range for no-load speed with the adjustable resistance connected. c) With the adjustable resistance in series with the shunt field set to zero, what is the speed regulation of the motor if its net output is 15HP? Note: the speed regulation is given by : Speed Regulation = (No Load Speed - Full Load Speed)/(No Load Speed)

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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