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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of

An ellipse
A paraboloid
None of these
A triangle

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Hydraulics and Fluid Mechanics in ME
The maximum thickness of boundary layer in a pipe of radius r is

r/2
r
2r

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Hydraulics and Fluid Mechanics in ME
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

Becomes curved
Remains horizontal
Falls on the front end
Falls on the back end

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to

Produce high heads
Pump viscous fluids
Give high discharge
All of these

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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

5kN
lOkN
20 kN
15 kN

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Hydraulics and Fluid Mechanics in ME
Power required to drive a centrifugal pump is directly proportional to _________ of its impeller.

Fourth power of diameter
Square of diameter
Cube of diameter
Diameter

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