1 2 3 4 Total 1/1 EPE UNIVERSITY Y OF ENGINEERING CE 354 Hydraulics INTERM EXAMI 31.01.2021 Duration: 90 minutes Hint: U

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1 2 3 4 Total 1 1 Epe University Y Of Engineering Ce 354 Hydraulics Interm Exami 31 01 2021 Duration 90 Minutes Hint U 1 (42.88 KiB) Viewed 22 times

1 2 3 4 Total 1/1 EPE UNIVERSITY Y OF ENGINEERING CE 354 Hydraulics INTERM EXAMI 31.01.2021 Duration: 90 minutes Hint: Use wherever needed 9-9.81 ms, yout0 kN/m WARNING: Any answer without the proper unit Riven shall lead to a direct zero fer the question of subiect. 1 (10p). Define following terms: Hydraulically smooth flow, hydraulic gradient. Sot each. 2 (20p). Explain the governing dominant) parameters affecting the energy loss in a real fluid for different flow regimes. 3 (20p). A conical reduction element is tested in a laboratory for its local lost effect. It has been connected to two horizontal pipes D=25cm De=10cm D.-250mm and D-100mm at the iniet and outlet of the reduction in the horizontal plane and pressure is measured at the inlet and outlet. The pressure difference between the inlet and outlet section is measured the pressure at the inlet is measured as p1100Ps and a difference is measured a 30-a) kPa for an inflow velocity of V.-2.5 m/s. calculate the local head loss coefficient k for the reduction element 4 (50p). By taking continuous and local energy losses into account: a (30p). Calculate the discharge of the given system. (20p), Plot the relative energy and piezometric lines of the system. Inlet: -0.5 Outlet : 1 Valve: 34 Sudden contraction: C-0.66; - (1/1) (180.00a) m (170.00-a) m Valve k=3,4 B D-0.30m L=1200m f=0.015 D=0.15m L900m 0.020 D29 2 -0.1" xy) where the last two digits of the student number Example: Stud. No.- 20990990074 +1 -0.1074 -74