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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For small discharge at high pressure, following pump is preferred

Axial flow
Mixed flow
Reciprocating
Centrifugal

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Hydraulics and Fluid Mechanics in ME
A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is

20 kN
lOkN
5kN
15 kN

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Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

Directly proportional to (radius)4
Inversely proportional to (radius)2
Inversely proportional to (radius)4
Directly proportional to (radius)2

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Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be

First rise and then fall
Steep
Horizontal
Nearly horizontal

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Hydraulics and Fluid Mechanics in ME
Resultant pressure of the liquid in the case of an immersed body acts through

Centre of buoyancy
Centre of gravity
Metacentre
Centre of pressure

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the __________ is called Euler's number.

Pressure force
Surface tension force
Elastic force
Viscous force

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