Hydraulics and Fluid Mechanics in ME
In series-pipe problems

the discharge is same through each pipe
the discharge through each pipe is added to obtain total discharge
the head loss is same through each pipe
a trial solution is not necessary

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Hydraulics and Fluid Mechanics in ME
When a liquid is flowing through a pipe, the velocity of the liquid is

Maximum at the centre and zero near the walls
Zero at the centre and maximum near the walls
Maximum at the centre and minimum near the walls
Minimum at the centre and maximum near the walls

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