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# (Solved): QUESTION 3 (25 Marks) Water flows from one reservoir A to another reservoir B through a pipe of v ...

QUESTION 3 (25 Marks) Water flows from one reservoir

`A`

to another reservoir

`B`

through a pipe of variable diameter as shown in the figure below. Pipe AC is

`40m`

long and

`100mm`

in diameter while pipe

`CB`

is

`60m`

long and

`150mm`

in a diameter. Darcy's friction

`f`

for both pipes equals 0.006 . The gradual expansion at

`C`

is at an angle of

`10\deg `

. The pipe entrance at

`A`

and exit are sharp. Considering all losses, 3.1 Determine the flow rate from reservoir

`A`

to

`B`

at the instant when the difference in elevation is

`20m`

.(20) 3.2 Plot the total energy line and the hydraulic grade line for the pipeline ACB at the ṣame instance, indicating values/levels at all salient points. (10)

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