Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 30, Problem 11RQ
To determine
The type of compound-motor connection that should be avoided.
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A left-sided signal x(t)=-e¯bt u(-t):
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X(s) -e-bu(t)e-st dt
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1
-(b+o+jw)t
dt =
=
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-∞
(a + b) + jw
1
s+b
For this integral to converge, it is necessary that b +σ <0; i.e., ROC: Re[s]=σ < −b.
2
How ?
A left-sided signal x(t)=-ebt u(-t):
A right-sided signal x(t)=e¯at u(t)
Find Laplace transform of x(t)=u(t)
Find Laplace transform of x(t) = −e¯btu(−t) + e¯atu(t)
Find Laplace transform of x(t) = u(t)
Chapter 30 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 30 - Prob. 1RQCh. 30 - Prob. 2RQCh. 30 - Prob. 3RQCh. 30 - Prob. 4RQCh. 30 - What type of motor is known as a constant-speed...Ch. 30 - What is CEMF?Ch. 30 - Prob. 7RQCh. 30 - Prob. 8RQCh. 30 - Prob. 9RQCh. 30 - What type of motor should never be operated at no...
Ch. 30 - Prob. 11RQCh. 30 - What is the most common way of changing the...Ch. 30 - Prob. 13RQCh. 30 - Prob. 14RQCh. 30 - What device is used to disconnect power to the...Ch. 30 - Prob. 16RQCh. 30 - Who was the first person to establish a...Ch. 30 - One horsepower is equal to how many W?Ch. 30 - A motor is operating a load that requires a torque...Ch. 30 - The motor in Question 19 is connected to a 250-VDC...Ch. 30 - Prob. 1PA
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