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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Neutral
Stable
None of these
Unstable

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Hydraulics and Fluid Mechanics in ME
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

14π R7/2/15Cd × a √(2g)
14π R3/2/15Cd × a √(2g)
14π R1/2/15Cd × a √(2g)
14π R5/2/15Cd × a √(2g)

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Hydraulics and Fluid Mechanics in ME
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

Could be any value
Zero
Maximum
Minimum

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Hydraulics and Fluid Mechanics in ME
In centrifugal pumps, maximum efficiency is obtained when the blades are

Bent backward
Radial
Bent forward
Straight

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Hydraulics and Fluid Mechanics in ME
Water is a __________ fluid.

Real
Ideal
Non-Newtonian
Newtonian

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Hydraulics and Fluid Mechanics in ME
A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called

Steady flow
Turbulent flow
Streamline flow
Uniform flow

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