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Bar stock of initial diameter = 90 mm is drawn with a draft = 15 mm. The draw die has an entrance angle = 18°, and the coefficient of friction at the work-die interface = 0.08. The metal behaves as a perfectly plastic material with yield stress = 105 MPa. Determine
(a) area reduction,
(b) draw stress,
(c) draw force required for the operation, and
(d) power to perform the operation if exit velocity = 1.0 m/min.
Phenol undergoes a first-order decay reaction in the CSTR with rate constant, k = 0.50 hr^-1. The current industrial pre-treatment permit for Phenol is 20 mg/l. The permit limitation may be changed, either higher or lower, in the future.
A cylinder has 500 cm3 of water. After a mass of 100 grams of sand is poured into the cylinder and all air bubbles are removed by a vacuum pump, the water level rises to 537.5 cm3. Determine the specific gravity of the sand.
the outer diameter of this sleeve is 20 mm, and its inner diameter is 10 mm. if the yield stress for the steel is (sy)st = 640 MPa, and for the bronze (sy)br = 520 MPa determine the magnitude of the largest elastic load P
A three point bending test is performed on a glss specimen having a rectangular cross section of hight d =6 mm and width b = 12 mm the distance between support points is 45mm.
A refrigerator compressor compresses 0.5 kg/s of saturated R-134A vapor at -10C to 1000 kPa and 50C. The compresser has a point that is not insulated and losess heat to the surroundings,
Find the tangent plane for each surface - Write the total differential of the function P at the point, where the volume is 4L and the temperature is 300 K.
An aeration system with a hydraulic retention time of 2.5 hours receives a flow of 0.2 MGD with BOD concentration of 150 mg/L. The suspended solids concentration in the aeration basin is
A sailor is being rescued using a boatswain's chair that issuspended from a pulley that can roll freely on the support cableACB amd is pulled at a constant speed by cablle CD
Compare the head loss for water flow (Q=5 cfs) in a 12 in., 3000 ft. long steel pipe using the darcy-weisbach equation and the hazen-williams formula.
determine the grain size required to obtain a strength of 200 MPa.
Estimate the elastic, shrinkage, and total axial deformation of a concrete column after 2 years of permanent load application. Assume the full structural load was applied at 28 days after placing concrete.
Do you think it might be important to know whether a raw material to be used in a manufacturing process has anisotropic properties? What about anisotropy in the finished product? Explain.
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