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A lightweight rotating shaft for a pump on the national aerospace plane is to be designed to support a cyclical load of 15,000 pounds during service. The maximum stress is the same in both tension and compression. The endurance limits or fatigue strengths for several candidate materials are shown below. Design the shaft, including an appropriate material, and justify your solution.
Three reservoirs are connected by three pipes as shown in Figure 1 with hA = 100 ft, hB = 20 ft, hC = 0 ft, l1 = 1000 ft, l2 = 500 ft, l3 = 400 ft and D1 = D2 = D3 = 1 ft. Determine flow rate into or out of each reservoir if friction in each pipe is ..
Cylindrical, steel bar stock (density = 7833 kg/m3, Cp = 0.465 kJ/(kg C)) of 10-cm diameter is heat-treated by drawing it at a velocity of 3 m/min through a 6-m-long furnace maintained at 900C.
A compaction test was conducted in a soils laboratory, and the standard proctor compaction procedure (ASTM D698) was used. The weight of a compacted soil specimen plus mold was determined to be 3815 g.
Say the availability of supply is 60% to, and through Tank “A”, and 40% supplying tank B. Is this close to the transmission capacity within the system to J and C? If not, what do you suggest?
A cylinder with a 6 in diameter and 12 in length is put undera compressive load of 138.4 kips. The modulus of elasticity for thespecimen is 6500 ksi and Poissons ratio is 0.4. Calculate the final length and the final diameter of the specimen under th..
Estimate the energy required to raise the temperature of 2 kg (4.42 lbm) of the following materials from 20°C to 100°C (68°F to 212°F): aluminum, steel, soda-lime glass, and high-density polyethylene.
determine the force in member AC, FH, and FG and indicate if the member is in tension or compression. List all zero force members.
For cubic crystals, as values of the planar indices h, k, and l increase, does the distance between adjacent and parallel planes (i.e., the interplanar spacing) increase or decrease? Why?
Determine the discharge in the gutter if the spread is 2.0 m. Estimate the flow intercepted by the curb opening inlet placed in the composite gutter if the inlet length is 1.75m.
Compute the corrected horizontal distance for the following conditions: Temperature: 25oC Tape length: 29.990m Slope angle: -3o42' Slope measurement: 211.416m
A 600 ft vertical crest curve crosses a 4 ft diameter pipe at rightangles at station 110+85. The PVI of the vertical curve is station110+00 and elevation 1098.4 ft with an incoming tangent grade of1.2% and an outgoing tangent grade of -1.8%.
Given this 10-yr record of annual precipitation in inches (28,21,33,26,29,27,19,28,18,22), plot a rough precipitation frequency curve. Tabulate the data to be plotted and show the method of computation. (note: the frequency in percent of years is ..
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