Engineering, 31.07.2019 02:30 Erinkim2292
Ne practical example of steady-state diffusion is found in the purification of hydrogen gas. one side of a thin sheet of palladium metal is exposed to the impure gas composed of hydrogen and other gaseous species such as nitrogen, oxygen, and water vapor. the hydrogen selectively diffuses through the sheet to the opposite side, which is maintained at a constant and lower hydrogen pressure. under steady-state conditions and at 600°c, a diffusion coefficient for hydrogen in palladium is d = 1.7 × 10-8 m2 /s. the respective hydrogen concentrations at the high- and low-pressure sides of the palladium plate are 2.0 kg/m3 and 0.4 kg/m3 , respectively. compute the number of kilograms of hydrogen that pa
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Engineering, 04.07.2019 18:10
Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
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Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:10
Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.
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Ne practical example of steady-state diffusion is found in the purification of hydrogen gas. one sid...
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