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How the lubricants reduce the friction and wear characteristics of the parts in contact?
draw the projections of a rhombus having diagonals 125mm and 50 mm long, the smaller diagonal of which is parallel to both the principal planes, while the other is inclined at 30 to the H.P.
(a) derive an expression for the net work transfer for the cycle. Prove that for a Stirling Cycle, the net work transfer is always from the system to the surroundings.
Steam enters a diffuser at 20 psia and 240oF with a velocity of 900 ft/s and exits as saturated vapor at 240oF and 100 ft/s. The exit area of the diffuser is 1 ft2. Determine (a) the mass flow rate of steam and (b) the rate of entropy generation.
make a text file that contains what is your absolute path, and call it paths.txt
At a section in a passage, the pressure is 150 kPa (abs), the temperature is 10 deg C, and the speed is 120 m/s. For isentropic flow of air, determine the Mach number at the point where the pressure is 50 kPa (abs). Sketch the passage shape.
calculate the largest semicircular surface flaw oriented along the axis of the bores that could withstand a fluid pressure of 50MPa.
find Torque at O2, and forces at O2, A and B, also calculate shaking force and shaking torque. MEE40003- Machine Dynamics
Determine an expression for the number of cycles to failure, Nf if the initial crack size is a0. State any assumptions you make.
A 40 mm diameter hole is drilled 3 m deep into the steel shaft. When the two torque are applied, determine (a) the maximum shear stress in the shaft: and (b) the angle of rotation of the free end of the shaft. Use G= 83GPa for steel.
rocket boosts the speed of a spacecraft from 7500 m/s to 10 500 m/s with a thrust of 890 kN. Calculate the rocket power.
What is a beam? What factors determine the maximum load that it can take without failure?
How many kilograms each of pearlite and the proeutectoid phase form? Schematically sketch and label the resulting microstructure.
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