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

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

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

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

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