Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 44, Problem 5RQ
To determine
Making of a P-type material.
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Show all work. Indicate the origin that is used for each plane.
Identify the Miller indices for the following planes.
N
23
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B)
y
the following table gives weight gain time data for the oxidation of some metal at an elevated temperature
W(mg/cm2). Time (min)
4.66 20
11.7 50
41.1 175
a) determin whether the oxidation kinetics obey a linear, parabolic, or logarithmic rate expression.
b) Now compute W after a time of 1000 min
A cylindrical specimen of aluminum is pulled in tension. Use the stress v. strain plot below
for this specimen of Al to answer parts (a) - (f). Hint: Each strain increment is 0.004.
Be sure to include your engineering problem solving method per the class rubric.
400
350
300
250
Stress
(MPa) 200
150
100
50
Aluminum (Stress v. Strain)
0
0
0.02
0.04
0.06
0.08
Strain
0.1
0.12
0.14
0.16
a. Compute the modulus of elasticity.
b. Determine the yield strength at a strain offset of 0.002.
c. Determine the tensile strength of this metal.
d. Compute the ductility in percent elongation.
e. Compute the modulus of resilience.
f. Determine the elastic strain recovery for an unloaded stress of 340 MPa.
Chapter 44 Solutions
Understanding Motor Controls
Ch. 44 - Prob. 1RQCh. 44 - The atoms of a material used as an insulator...Ch. 44 - The two materials most often used to produce...Ch. 44 - Prob. 4RQCh. 44 - Prob. 5RQCh. 44 - How is an N-type material made?Ch. 44 - Which type of semiconductor material can withstand...Ch. 44 - All electronic components are formed from P-type...
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