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1 A pump with an 80% efficiency drives water up between two reservoirs through a piping system of total length L = 15 and circular cross -section diameter d = 7 cm. The reservoirs are open to the atmosphere at an ambient temperature of 20 C. The difference in elevation between the free surface can be accounted for by the local loss coefficients Kentrance Kexit 1.0, Kelbow 0.4. If the volumetric flow rate in the system Q = 10 Liter/s, and the surface roughness of the pipe is = 0.15 mm, calculate:
(a) The average water flow velocity in the pipe.
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