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14-60E A centrifugal pump is used to pump water at 77°F from a reservoir whose surface is 20.0 ft above the centerline of the pump inlet. The piping system consists of 67.5 ft of PVC pipe with and ID of 1.2 in and negligible average inner roughness height. The length of pipe from the bottom of the lower reservoir to the pump inlet is 12.0 ft. There are several minor losses in the piping system: a sharp edged inlet (KL = 0.5 ), two flanged smooth 90° regular elbows (KL = 0.3 each), two fully open flanged glove valves (KL = 6.0 each), and an exit loss into the upper reservoir (KL = 1.05). The pump's required net positive suction head is provided by the manufacturer as a curve fit: NPSHreq = 1.0 ft + (0.0054 ft/gpm^2)Q^2, where volume flow rate is in gpm. Estimate the maximum volume flow rate (in units of gmp) that can be pumped without cavitation.
A submerged surface has an area of 25 square feet, and the resultant force acting on it is 100 pounds, what is the pressure exerted on the surface, in psi
determine a dollar amount on December 31st , 2011 FOR $1000 equal payments made at the end of each of the previous 7 years including the current year. use an effective interest rate of 10% compounded annually.
A 6 inch X 4 inch rectangular beam is subjected to a maximum shear force of 1900 lbf. Determine the shear stresses at each of the following points on the beam cross section:
the pressure drop over 15 m of 2-cm diameter galvanized iron pipe is measured to be 60 Pa. If the pipe is horizontal, estimate the flow rate of water. use for water v=10^-6 m^2/s and density of water = 1000kg/m^3
Suppose an air pollutant with rate constant k= 0.20/hr is emitted into the box at a total rate of 10.0 kg/s. Find the steady-state concentration if the air is assumed to be completely mixed.
Calculate the compressive stress (in psi) for a 6-in diameter by 12-in high concrete test specimen if the total deformation under load is 0.015 in. Calculate the total load on the test cylinder stress.
The problems of survival of animals on land are very different from those of animals in the aquatic environment. Describe four problems associated with survival in terrestrial environments that are not encountered in aquatic environments. For each ..
The PI is at station 250+50, the design speed is 65mi/h, and a maximum superelevation of 0.07 ft/ft is to be used. If the central angle of the curve is 38 degrees, design a curve for the highway by computing the radius and stationing of PC and PT.
So, B is the corner of the L. On member BC there is a uniform distributed load of 10 kN/m. This has to be solved using the Slope Deflection Method for Frames.
Determine the maximum and minimum stress intensities in the section.
If a hook can sustain a maximum withdrawal force of 250 N inthe vertical direction, determine the maximum tension, T, that can be exerted.
Calculate the pH of a buffer solution prepared by mixing 8.5g KH2PO4 with 43.5g K2HPO4 in 1 liter of water (this is actually the composition of the dilution water used in a BOD test. Follow the same procedures you have been using for previous acid/..
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