Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 22, Problem 1SQ
Describe what is meant by sequence control.
Expert Solution & Answer
To determine
Describe the meaning of sequence control.
Explanation of Solution
Sequence control:
Sequence control is a method of control to activate all the elements in a sequence manner.
This type of control is necessary wherever the activation of an auxiliary component depends on the main components.
In this control method, the starters are connected in a system such that one motor cannot be energized until another one is in operation.
Applications:
- Using in the systems wherever auxiliary equipment is associated with main systems. For example: hydraulic and lubricating oil pumps.
- Using in conveyor systems (subassembly or main line).
Conclusion:
Thus, the meaning of sequence control has been explained.
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Students have asked these similar questions
Medium 1 is a lossless dielectric (ε₁, μ₁ = μo, σ₁ = 0)
Medium 2 is a perfect electric conductor (PEC) ( 2 = 0, μ2 = μo, σ₂ = ∞)
[ Moσ = 0] [ε0 μ₁ σ₂ = ∞ ] (J=σE is finite, E = 0)
E(z) Exe² +Пe₁²]
1. For the case εr] =
λι =
=
E2(z)-0
-
1 (vacuum), E₁x 1 V/m and a frequency f = 500 MHz determine:
n₁ =
12=
2. Determine:
r =
T=
3. Using this I show that the total electric field E₁0(z) in region 1 can be written as:
E(z) = -2jE, sin(2лz/λ)✰
4. The magnitude E10(z) will show an interference pattern. The SWR (standing wave ratio) is the
Emax/Emin ratio of the magnitude of the total electric field in region 1. What is the SWR?
E (z) = 2|E|sin(2лz/2₁)|
E" (z)
SWR A
Imax
E(z)
Imin
1+r
1-||
tot
5. Roughly SKETCH the magnitude of E10(z) and E20(z) on the graph below.
E₁tot(z)
tot
E20(z)
-0.40
-0.30
-0.ło
z=0
+0.1b +0.20
would anyone be able to tell me the amount of wire needed for this electrical plan in this house? and if possible would anyone be able to tell me the amount of any other materials needed (wire sizes, box sizes/styles)
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