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

Pressure in pipes and channels
Atmospheric pressure
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

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

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

Work-done on the wheel to the energy (or head of water) actually supplied to the turbine
Power produced by the turbine to the energy actually supplied by the turbine
Actual work available at the turbine to energy imparted to the wheel
None of these

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