EBK ELECTRIC MOTOR CONTROL
EBK ELECTRIC MOTOR CONTROL
10th Edition
ISBN: 9780100784598
Author: Herman
Publisher: YUZU
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 31, Problem 1SQ

Excluding slip, at what speed (r/min) will an eight-pole, 60-hertz, 240-volt motor run?

Expert Solution & Answer
Check Mark
To determine

Calculate the speed in rpm for of an eight pole, 240V, 60-hertz squirrel cage induction motor.

Answer to Problem 1SQ

The speed in rpm of a squirrel cage induction motor is 900rpm.

Explanation of Solution

Given data:

The number of poles (n) is 8.

The frequency (f) is 60Hz.

The line voltage (E) is 240V.

Formula Used:

Write the expression to calculate the speed in rpm of a squirrel cage induction motor.

Speedinrpm=60×HertzPairsofpoles (1)

Calculation:

The total number of poles in the motor is 8. Therefore, the number of pairs of poles of the motor is 4.

Substitute 60 for Hertz and 4 for Pairsofpoles in Equation (1) to find speed.

Speedinrpm=60×604=36004=900rpm

Conclusion:

Thus, the speed in rpm of a squirrel cage induction motor is 900rpm.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
A separately excited 6-kilowatt generator has a terminal voltage of 135V at no load.  At full load, the terminal voltage is 120V with speed and field excitation unchanged. Armature resistance = = 0.25 ohm. A. What is the amount of voltage decrease caused by armature reaction and the voltage regulation?
J. A sampling system can be set to adjust its sampling rate in 25 He steps. Considering the signal spectra pleted below, specify the minimum sampling rate setting for the signals: a)x(1) b)(1)+(1) 985)+20 0,09 0:00 0,0 106) 100) SORO -2501 250V (1500+501) 。 1500+50V 201 2500
1. For this problem, state your answers to 4 significant figures. (1)For the message signal shown below, sketch the phase-meduced form and 4-5/N rad V. Specify values of the miniman & maximum instantaneous frequencies in He (b) Find the approximate bandwidth of the phase-modulaud signal, assuming that the effective handwidth of the message is equal to its 4th harmonic frequency (N-2015 101 2x10' 159-
Knowledge Booster
Background pattern image
Electrical Engineering
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.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Electric Motor Control
Electrical Engineering
ISBN:9781133702818
Author:Herman
Publisher:CENGAGE L
Text book image
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Text book image
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning
Power vs Torque - In Depth Explanation and Mythbusting; Author: kyle.Engineers;https://www.youtube.com/watch?v=X7KWtf4wqN4;License: Standard Youtube License