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A commercial food waste grinder in which the final shaft rotates at between 40 and 44 rpm is to be designed. The input is from an electric motor running at 850 rpm and delivering 0.50 hp. Design a double-reduction spur gear train for the grinder
Determine the volume of three identical activated sludge tanks following primary clarification to aerate 36,000 m cubed/d with a BOD concentration of 180 mg/l at a BOD loading of 560 g/m cubed*d.
A simply supported beam 100 feet in length is pinned at its left end and supported on a roller at its right end. There is a uniformly distributed load of 10 kips/ft along the entire length of the beam. There is also a concentrated load of 20 kips dow..
A flat rectangular metal plate measures 17.63 + and - 0.02 inches by 26.85 + and - 0.04 inches. A circular hole of diameter 11.42 + and - 0.03 inches is cut out of the plate.
Assume he has to reach a town 300km away, and that the 40 kg he carries includes both merchandiseand the food necessary for his sustenance during the trip at 2000Cal/day.
An HSS 10×6×5?16 with Fy = 46 ksi is used as a column. The length is 16 feet. Both ends are pinned, and there is support against weak axis buckling at a point 6 feet from the top. Determine the design strength for LRFD.
Calculate the moments M_A and M_B about point A for the forces applied at points A and B. Then, determine the resulting couple moment M_R. Assume that a positive moment produces a counterclockwise rotation whereas a negative moment produces a cloc..
An intelligence data bank center requires power 24 hours a day, 7days a week. If the main power grid fails, a backup power supply isinitiated.
A load of 14 tonnes is suspended at the end of a steel rope.If the load is subjected to a maximum acceleration/deceleration of2.5m/s2, when raised and lowered, calculate the diameter of therope needed to support the load.
Find the capacitive susceptance per mile of a single-phase line operating at 60 Hz. The conductor is Partridge, and spacing is 20 ft between centers.
From the following excerpt of field notes, plot the cross section on graph paper and superimpose on it a design template for a 30-ft-wide level roadbed with fill slopes of 2-1/2:1 and a subgrade elevation at centerline of 970.30 ft. Determine the ..
Write a formula for the number of bridges that minimizes the sum of the construction and detour costs. (This is not necessarily the solution that society would choose based on the political process, but it should be a rough approximation.)
The combined weight of the wheelbarrow and its load is 500 lb with center of gravity at G. Compare the normal force at B under acceleration with that for static equilibrium in the position shown. Neglect the friction and mass of the wheel.
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