Elements of Electromagnetics (The Oxford Series in Electrical and Computer Engineering)
6th Edition
ISBN: 9780199321384
Author: Matthew Sadiku
Publisher: Oxford University Press
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Chapter MA, Problem 1.14MA
(i)
To determine
(ii)
To determine
(iii)
To determine
A unit normal to
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Determine the resultant stress at points P and Q.
For the notched specimen with h = 0.13 m and r =11 mm, calculate the nominal stress for F=5 kN.
F
h
F
25 mm
Please submit your answer in the units of MPa.
A tensile specimen made of hot-rolled AISI 1020 steel is loaded to point corresponding to a strain of 49%.
60
Su = 66 ksi
Stress σ (ksi)
Sy = 39 ksi
400B
Se = 36 ksi
Hot-rolled 1020 steel
20
F
0
0
10 20 30
40 50 60
70 80 90 100 110 120 130 140 150 160
Strain € (%)
0
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6
Area ratio R
0.1
0.2
0.3
0.4
0.5
Area reduction A,
What value of Su is applicable to this location?
0.6
Chapter MA Solutions
Elements of Electromagnetics (The Oxford Series in Electrical and Computer Engineering)
Ch. MA - Prob. 1.1MACh. MA - Prob. 1.2MACh. MA - Prob. 1.3MACh. MA - Prob. 1.4MACh. MA - Prob. 1.5MACh. MA - Prob. 1.6MACh. MA - Prob. 1.7MACh. MA - Prob. 1.8MACh. MA - Prob. 1.9MACh. MA - Prob. 1.10MA
Ch. MA - Prob. 1.11MACh. MA - Prob. 1.12MACh. MA - Prob. 1.13MACh. MA - Prob. 1.14MACh. MA - Prob. 1.15MACh. MA - Prob. 2.1MACh. MA - Prob. 2.2MACh. MA - Prob. 2.3MACh. MA - Prob. 2.6MACh. MA - Prob. 2.7MACh. MA - Prob. 2.9MACh. MA - Prob. 4.1MACh. MA - Prob. 4.2MACh. MA - Prob. 4.3MACh. MA - Prob. 4.4MACh. MA - Prob. 4.5MACh. MA - Prob. 4.6MACh. MA - Prob. 4.7MACh. MA - Prob. 4.8MACh. MA - Prob. 4.9MACh. MA - Prob. 4.10MACh. MA - Prob. 4.11MACh. MA - Prob. 4.14MACh. MA - Prob. 4.15MACh. MA - Prob. 4.17MA
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- A tensile specimen made of hot-rolled AISI 1020 steel is loaded to point corresponding to a strain of 40%. 60 Su = 66 ksi Stress σ (ksi) 40 20 Sy= = 39 ksi Se = 36 ksi Hot-rolled 1020 steel F | G | H 0 10 20 30 40 50 60 0 70 80 90 100 110 120 130 140 150 160 Strain € (%) ☐ T 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Area ratio R 0.1 0.2 0.3 0.4 0.5 Area reduction A, What value of Sy is applicable to this location? 0.6arrow_forwardA vertical .2m by .2m square plate is exposed to saturated water vapor at atmospheric pressure. If the surface temperature is 80 degrees C and the flow is laminar, estimate the loal heat transfer coefficents at the middles and at the bottom of the plate.arrow_forwardA transformer that is 10 cm long, 6.2 cm wide, and 5 cm high is to be cooled by attaching a 10 cm by 6.2 cm wide polished aluminum heat sink(emissivity=.03) to its top surface. The heat sink has seven fins, which are 5 mm high, 2mm thick, and 10 cm long. A fan blows air at 25 degrees C parallel to the passages between the fins. The heat sink is to dissipate 12W of heat, and the base temp of the ehat sink is not to exceed 60 degrees C. Assuming the fins and the base plate to be nearly isothermal and the radiation heat transfer to be negligible, determine the minimum free-stream velocity the fan needs to supply to avoid overheating. Assume the flow is laminar over the entire finned surface of the transformer.arrow_forward
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