Question 3 A 240V, dc shunt motor with an armature circuit resistance of 0.12 runs at 850rpm when the armature current is measured to be 70A. It is intended to reduce the speed to 650rpm whereby the armature current will be 50A. This is achieved by placing an additional resistor in series with the armature resistance. Find the value of the pZ resistance required to achieve that, when k = = 233. 60A

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...
icon
Related questions
Question

Please see image attached

Question 3
A 240V, dc shunt motor with an armature circuit resistance of 0.12 runs at 850rpm
when the armature current is measured to be 70A. It is intended to reduce the speed to
650rpm whereby the armature current will be 50A. This is achieved by placing an
additional resistor in series with the armature resistance. Find the value of the
resistance required to achieve that, when k = P.
= 233.
60A
Transcribed Image Text:Question 3 A 240V, dc shunt motor with an armature circuit resistance of 0.12 runs at 850rpm when the armature current is measured to be 70A. It is intended to reduce the speed to 650rpm whereby the armature current will be 50A. This is achieved by placing an additional resistor in series with the armature resistance. Find the value of the resistance required to achieve that, when k = P. = 233. 60A
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Diode-Transistor Logic Circuit
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,