Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 16, Problem 1SQ
What are some applications of temperature-actuated switches?
Expert Solution & Answer
To determine
List the applications of a temperature-actuated switch.
Explanation of Solution
Temperature-actuated switch uses a mechanism that is used to sense and measure the temperature. The temperature switch works on the basis of the temperature variation occurring in an enclosed place or in an open area. The switch can be actuated when the specific or limited temperature range is reached. For example, thermal overload relay is the temperature switch used for the motor protection. Mostly used in control circuits.
The applications of temperature actuated switches are as follows:
- Heaters.
- Blowers.
- Fans.
- Solenoid valves.
- Pumps.
Conclusion:
Thus, the applications of the temperature-actuated switches are listed.
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3-4)
3.4-2 Signals g₁(t) = 104П(104) and g2(t) = 8(t) are applied at the inputs of the ideal low-pass
filters H₁(f)=(f/20,000) and H2(f) = П(f/10,000) (Fig. P3.4-2). The outputs y₁ (t) and
y2(t) of these filters are multiplied to obtain the signal y(t) = y1 (1)y2(t).
(a) Sketch G1(f) and G2(f).
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(d) Find the bandwidths of y₁ (t), y2(t), and y(t).
8₁ (1)
H₁(f)
y, (t)
y(t) = y₁ (1) y2 (1)
82(1)
½⁄2 (1)
H₂(f)
solve the differential equation y'' -2y'-3y=x³e^5x cos(3x)
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3-3) Similar to Lathi & Ding prob. 3.3-7.
The signals in the figure below are modulated signals with carrier cos(5t). Find the Fourier transforms of
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magnitude and phase spectra for figure parts (a) and (b).
Hint: these functions can be expressed in the form g(t) cos(2лfot)
(a)
1
1
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(b)
(c)
όπ
Chapter 16 Solutions
Electric Motor Control
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