Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 19, Problem 1RQ
What is the function of a proximity detector?
Expert Solution & Answer
To determine
The function of a proximity detector.
Explanation of Solution
Proximity sensors or detectors are used to sense an object's presence without touching it directly. It stops the detector from wearing and allows it to handle hot red metals. Proximity detectors work on different principles. Many metal detectors detect only iron metals, while others could sense all types of metals.
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PROBLEM 3.23
3.23 Under normal operating condi-
tions a motor exerts a torque of
magnitude TF at F. The shafts
are made of a steel for which
the allowable shearing stress is
82 MPa and have diameters of
dCDE=24 mm and dFGH = 20
mm. Knowing that rp = 165
mm and rg114 mm, deter-
mine the largest torque TF
which may be exerted at F.
TF
F
rG-
rp
B
CH
TE
E
1. (16%) (a) If a ductile material fails under pure torsion, please explain the failure
mode and describe the observed plane of failure.
(b) Suppose a prismatic beam is subjected to equal and opposite couples as shown
in Fig. 1. Please sketch the deformation and the stress distribution of the cross
section.
M
M
Fig. 1
(c) Describe the definition of the neutral axis.
(d) Describe the definition of the modular ratio.
using the theorem of three moments, find all the moments, I only need concise calculations with minimal explanations. The correct answers are provided at the bottom
Chapter 19 Solutions
Understanding Motor Controls
Ch. 19 - What is the function of a proximity detector?
Ch. 19 - What is the basic principle of operation used with...Ch. 19 - What is an oscillator?Ch. 19 - What is the basic operating principle of operation...Ch. 19 - What type of electric circuit is used to increase...Ch. 19 - Name two types of proximity detectors used to...Ch. 19 - What is the maximum range at which most capacitive...Ch. 19 - How is it possible for an ultrasonic proximity...
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