QUESTION 15

(12 Marks)

Two reservoirs have a difference in height of 15 meters at the free surface. They are connected

by two pipes in series; the first tube is 10 m long and has a diameter of 6 cm. The second tube is

20 meters long with a diameter of 12 cm. At the change in tubes, an expander (0 = 20°) is fitted,

there are two 90° bends (flanged) in each section of piping. Assuming f= 0.0216 for both tubes,

what is the flow rate?

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