INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780357670590
Author: Herman
Publisher: CENGAGE L
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Chapter 18, Problem 7RQ
To determine
The way in which the holding contacts are connected.
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1.1 m
1.3 m
B
60-mm diameter
Brass
40-mm diameter
Aluminum
PROBLEM 2.52
-
A rod consisting of two cylindrical portions AB and BC is restrained at both
ends. Portion AB is made of brass (E₁ = 105 GPa, α = 20.9×10°/°C) and
portion BC is made of aluminum (Ę₁ =72 GPa, α = 23.9×10/°C).
Knowing that the rod is initially unstressed, determine (a) the normal
stresses induced in portions AB and BC by a temperature rise of 42°C, (b)
the corresponding deflection of point B.
30 mm
D
=
40 MPa
-30 mm
B
C
80 MPa
PROBLEM 2.69
A 30-mm square was scribed on the side of a large steel pressure
vessel. After pressurization, the biaxial stress condition at the square
is as shown. For E = 200 GPa and v=0.30, determine the change in
length of (a) side AB, (b) side BC, (c) diagnonal AC.
Please solve in detail this problem
thank you
Chapter 18 Solutions
INDUSTRIAL MOTOR CONTROL
Ch. 18 - What are the two major types of control circuits?Ch. 18 - Prob. 2RQCh. 18 - Refer to the schematic shown in Figure 184. What...Ch. 18 - Refer to the schematic shown in Figure 184. What...Ch. 18 - What generally characterizes a three-wire control...Ch. 18 - Explain the function of a holding contact.Ch. 18 - Prob. 7RQ
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