Hydraulics and Fluid Mechanics in ME
A manometer is used to measure

Difference of pressures between two points in a pipe
Pressure in pipes and channels
Pressure in Venturimeter
Atmospheric pressure

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

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