Essentials Of Materials Science And Engineering
4th Edition
ISBN: 9781337385497
Author: WRIGHT, Wendelin J.
Publisher: Cengage,
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Question
Chapter 9, Problem 9.86P
Interpretation Introduction
Interpretation:
The solubility of hydrogen in liquid aluminum needs to be determined, before solidification and at 0.01 atmospheric pressure.
Concept introduction:
Solidification is a process of forming crystal structure from molten metal during casting.
Degassing is a process of removing hydrogen content from molten metal.
It is necessary to remove hydrogen content from molten metal before casting to improve the quality of the casting.
Amount of gas in molten metal is determined by Sieverts law.
According to Sievert's law,
Percent of gas =
Where K= Content
Pgas = Partial pressure of the gas.
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Chapter 9 Solutions
Essentials Of Materials Science And Engineering
Ch. 9 - Prob. 9.1PCh. 9 - Prob. 9.2PCh. 9 - Prob. 9.3PCh. 9 - Prob. 9.4PCh. 9 - Prob. 9.5PCh. 9 - Prob. 9.6PCh. 9 - Prob. 9.7PCh. 9 - Prob. 9.8PCh. 9 - Prob. 9.9PCh. 9 - Prob. 9.10P
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- (a) Three 20 µF capacitors are star-connected across a 400 V, 50 Hz, three-phase, three-wire supply. Calculate the current in each line. (b) If one of the capacitors is short-circuited, calculate the line cur rents. (c) If one of the capacitors is open-circuited, calculate: the line currents and the p.d. across each of the other two capacitors. ANS: 1.525 A; 2.64 A, 2.64 A, 4.57 A; 1.32 A, 1.32 A, 0; 210 Varrow_forwardExplain the advantages of three-phase supply for distribution purposes. (b) Assuming the relationship between the line and phase values of currents and voltages, show that the active power input to a three-phase balanced load is √3VI cos φ, where V and I are line quantities. (c) Three similar inductors, each of resistance 10 Ω and inductance 0.019 H, are delta-connected to a three-phase, 400 V, 50 Hz sinusoidal supply. Calcu late: the value of the line current; the power factor and the active power input to the circuit. ANS: 59.5 A, 0.858 lag, 35.5 kWarrow_forwardnot use ai pleasearrow_forward
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