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1. Briefly explain the concept of steady state as it applies to diffusion.
2. (a) Briefly explain the concept of a driving force.
(b) What is the driving force for steady-state known that the concentration of nitrogen in the steel at the high-pressure surface is 2 kg/m3. How far into the sheet from this high- pressure side will the concentration be 0.5 kg/m3? Assume a linear concentration profile.
during a plant visit it was noticed that a 12-m-long section of a 12-cm-diameter steam pipe is completely exposed to
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At a given instant of time, the temperature distribution within an infinite homogeneous body is given by the function
a heat pump with a cop of 3.0 is used to heat air contained in a 1205.4m3 of well-insulated rigid tank. initially the
As shown in the diagram, two reversible cycles arranged in series both produce the same net work, W out. The first cycle receives energy QH by heat transfer from a hot reservoir at 1000 R and rejects energy Q by heat transfer to a reservoir at an int..
Three aluminium cylindrical pressure vessels thicknesses 14 mm and radius 840 mm. They are periodically filled and emptied to an interal pressure of 2MPa. Cracks can grow through the wall driven by cycle of stress on pressurisation.
the slider-crank mechanism shown is an idealization of an automobile crank shaft connecting rod and piston. the length
assignment overview carbon fibre reinforced polymers cfrp have been used extensively in aerospace applications due to
A gas-turbine power plant operating on an ideal Brayton cycle has a pressure ratio of 6. The gas temperature is 350 K at the compressor inlet and 1450 K at the turbine inlet. Utilizing the air standard assumptions, determine (a) the gas temperature ..
derive the intersection coordinates for the first quadrant for the following curves a- modified goodman with langer
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Determine the orientation of an underground pipe that is transporting glycerine between two buildings. The pipe that is transporting the flow has a variable diameter with negligible viscous effects. At one point (A) in the pipe, the pressure and velo..
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