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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 triangle
A paraboloid
None of these

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Hydraulics and Fluid Mechanics in ME
Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.

Ratio
Sum
Different
Product

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Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

wAx
wx
wA
wA/x

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Hydraulics and Fluid Mechanics in ME
Centrifugal pump is started with its delivery valve

Kept fully closed
Irrespective of any position
Kept fully open
Kept 50% open

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Hydraulics and Fluid Mechanics in ME
Newton's law of viscosity is a relationship between

Shear stress and rate of shear strain
Shear stress and velocity
Pressure, velocity and temperature
Rate of shear strain and temperature

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Hydraulics and Fluid Mechanics in ME
The viscosity of water at 20°C is

One centipoise
One poise
One stoke
One centistoke

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