27. 3.12. For Figure P3.12, find the pipe diameter required to produce a flow rate of 50 kg/s if the flow losses are h = 6V-12g.. Water 3 m h = 6 V/ V. Figure P3 12

5. Consider two tanks, A and B, each with a large opening at the top. The two tanks contain different liquids. A small hole is made in the side of each tank at the same depth h below the liquid surface, but the hole in tank A has three times the cross-sectional area of the hole in tank B. (a) If it is known that the mass flow rate is the same for the two holes, find the ratio of PALPB of the densities of the liquids in tanks A and B. (b) (c) equal volume flow rates, what height above the hole must the liquid in tank A be just then? Find the ratio RVAIRVB of the volume flow rates from the two tanks. At one instant, the liquid in tank B is 90 cm above the hole. If the tanks are to have

.A hydraulic pump delivers 13.5 litres per minute towards pressure of 310 bar.Find the following  (a) Calculate the hydraulic power in kW    (b) If the overall efficiency of the pump is given as 63% .Find the input of electric power needed to drive the pump in watts (a) The hydraulic power (in kW) = (b) The power of electric motor needed to drive the pump (in W) =

Fluid Mechanic Water, as seen in the figure above, is a 25° angle contractor in a piping system. With an elbow, it is directed downward in the installation with a volumetric flow of 0.025 m3 / s. Effective pressure at 1 point is measured as 2 bar. The flow is frictionless and the effects of gravity are neglected. a-)Effective pressure at point 2 b-) Elbow in place Calculate the x and y components of the force required to hold and the resultant force (pwater =1000 kg/m3, g = 9.81 m/s2)

In our house water pipe line with diameter of 2cm is connected to shower head that has 35 holes. The speed of the water in the pipe line is 1.1m/sec. i) What is the volume flow rate in the pipe line? ii) At what speed does the water leave one of the holes with diameter 0.0014m in the shower head?

Imagine the water level in the tank as shown in the Figure rises at a rate of 0.004579 ft³/sec. then find: i) The volume flowrate of water leaving the tank (Q3) in ft³/s from pipe 3. ii) The average velocity of water leaving the tank (V3) in ft/s from pipe 3. Pipe 1: Qi=0.0109 ft²/s Pipe 2: Q₂ = 0.025 ft³/s Pipe 3: dy = 1.5 in. V₁ = ?! Q₁ =?