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A No. 204 radial-contact ball bearing carries a combined load of 200 lb radially and 150 lb axially at 1200 rpm. The bearing is subjected to steady loading. Find the bearing life in hours for 90% reliability.
a 250 kg block is pulled from rest along a rough surface by rope inclined 25 degree to horizontal. the tension in the
Find the maximum tensile and compressive stresses σt and σc, respectively, in the frame due to the load P= 8.0 kN if L= H = 1.4 m.
a thick cylinder has an inside diameter of 60 mm and an outside diameter of 100 mm. it is pressurised internally until
Oil with S = 0.86 is being transported in a pipe. Calculate the pressure if a U-tube manometer reads 9.5 in. Hg. The oil in the manometer is depressed 5 in. below the pipe centerline.
an air compressor is powered by a 2hp motor assume this is all input to the compressor. the inlet pressure and
500 galmin 30 ls of 100 degree f 40 degree c water flows through 300 ft 90m of 6-inch sch 40 steel pipe. the pipe
Consider conditions for which there is a uniform heat transfer rate per unit length, qi'= 1.25 X 105 W/m, from the exhaust gases to the pipe inner surface, while air flows through the annular passage at a rate of m· a = 2.1 kg/s.
The equipment will provide a net value of £450 000 per year during the five-year period. Given that depreciation is declining balance, the after-tax ALARR is 20%, and the corporate income tax rate is 40%, what is the total after-tax annual cost of..
Metals yield at a stress much lower than those calculated on the basis of their bond strength alone. This is explained by the presence of defects. Identify the principal defects responsible for this observation.
resolve a vector a which has a magnitude of 50 units and a direction of 210 degrees into two vetors b and c. c is to be
On a beautiful day your ship sights a water spout in the East Indian Ocean. You fix your position as 6000 ft from the spout and record a wind velocity of 10 ft/s. What wind velocity and barometric pressure does a fishing boat 600 ft from the spout ex..
Calculate the overall heat transfer coefficient (U) for the assumed tube diameter, fin shape and material. Use correlations to estimate hot-and cold-side convection coefficients, conduction resistance, contact resistance (if any), and fouling resi..
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