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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.

Sum
Arithmetic mean
Geometric mean
Difference

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Hydraulics and Fluid Mechanics in ME
A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the

Manometric head
Velocity head
Static head
Kinetic head

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Hydraulics and Fluid Mechanics in ME
The center of pressure of a surface subjected to fluid pressure is the point

at which all hydraulic forces meet
similar to metacentre
on the surface at which resultant pres-sure acts
on the surface at which gravitational force acis

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Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

coincides with the centroid of the volume of fluid displaced
remains above the centre of gravity
remains below the centre of gravity
coincides with the centre of gravity

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water to the turbines?

Air lift pump
Centrifugal pump
Reciprocating pump
Jet pump

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Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in meatcentric height will be

Same
Higher
Lower/higher depending on weight of body
Lower

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