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A cylindrical casting is 0.4 m in diameter and 0.6 m in length. Another casting of the same metal is rectangular in cross-section, has a width-to-thickness ratio of 3, and has the same length and cross-sectional area as the cylindrical casting. Both pieces are cast under the same conditions. What is the ratio of the solidification times of the two castings? Use Chvorinov's rule and n=2.
Show that Airy's stress function ? = Crθ sinθ satisfies the biharmonic equation. Also determine the stresses in polar co-ordinate system.
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.
the drive roller for a conveyor belt. a link a-b is rotating at 80 rpm counterclockwise .blink a-b is 60mm longlink b-c
Calculate the pressure of 15.0g of methane gas in a 1.50L vessel at 45.0 degrees C using (a) the Ideal Gas Law and (b) the van der Walls equation using the following information about the constants, a and b: a = 2.253 and b = 0.04278.
an air-standard otto cycle compression ratio of 9 absorbs 1000 btulbm of air. if at the beginning of the compression
the 30 mg aircraft is climbing at the angle theta15 with a thrust t of 180 kn. at the instant shown its speed is 300
The cylinder of a water-cooled reciprocating compressor contains 0.05m^3 of air at 1.01bar. It is compressed isothermally to 8.0 bar. Determine the work input and the amount of heat rejected to the compressor cooling water.
an energy-efficient house has been constructed so tightly that there is no air exchange with the outside. while this
what is the use of dimentionsless numbers, and why the temperature is max on gas turbine blade tip.
what is the role of solid state diffusion in i case hardening of steels ii creep processes in nickel base super alloys
a chicken has a mass of 2.2 kg and a specific heat of 3.54 kjkgc. the chickens are cooled by water that enters the heat
a gas contained within a piston-cylinder assembly undergoes three processes in series taking the gas from state 1
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