A 50-mm diameter siphon is drawing oil (S.G. = 0.82) from an oil reservoir as shown. If the head lossfrom point 1 to point 2 is 1.50m and from point 2 to point 3 is 2.40m, find the discharge of oil from thesiphon and the oil pressure at point 2.2.00 m50-mm-diameter siphonOil (s.g. =0.82)5.00 m

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Answered: A 50-mm diameter siphon is drawing oil…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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pump with critical cavitation number 0,08 pumps water to a total head of 60 m and temperature of 15°C (Pv=1707 Pa). If the barometric pressure is 98 kPa, head loss in the suction pipe is 1m. Find the maximum value of static suction lift in meters to avoid cavitation in the pump.
Water flows inside a solid cylindrical pipe, which narrows as it goes up to a height h (see diagram below). The lower horizontal section has circular cross-sectional diameter d, whereas the upper horizontal section has diameter d/2. Let us denote A to be a point at the lower horizontal section and B to be a point at the upper horizontal section. The flow speed at A and B is uд and u, respectively. The pressure at A and B is PA and PB, respectively. РА UA Oom Ja d d/21 1 UB h (a) Assuming water to be incompressible, show that the flow speed at B is four times the flow speed at A. (b) Use Bernoulli's equation to find the drop in the water pressure from A to B. Express the result in terms of h, uд, the density of water p, and the acceleration of gravity g. (c) Above certain critical height h, vapour bubbles start to appear at the top horizontal section, which hinders water flow through the pipe. Explain why this happens.
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