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

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Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is

Directly proportional to (diameter)² of its impeller
Directly proportional to diameter of its impeller
Inversely proportional to diameter of its impeller
Inversely proportional to (diameter)² of its impeller

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Hydraulics and Fluid Mechanics in ME
When a body is placed over a liquid, it will float if

Gravitational force is more than the up-thrust of the liquid
Gravitational force is less than the up-thrust of the liquid
Gravitational force is equal to the up-thrust of the liquid
None of these

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