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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The buoyancy depends on

mass of liquid displaced
pressure of the liquid displaced
depth of immersion
viscosity of the liquid

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

One centistoke
One stoke
One poise
One centipoise

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Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - nH)H3
1.84(L - 0.1nH)H3/2
1.84(L - 0.1nH)H5/2
1.84(L - nH)H2

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Hydraulics and Fluid Mechanics in ME
A flow in which __________ force is dominating over the viscosity is called turbulent flow.

Inertia
Elastic
Surface tension
Viscous

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Hydraulics and Fluid Mechanics in ME
The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

Inversely
Directly
Both A and B
None of these

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Hydraulics and Fluid Mechanics in ME
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by

[2(Vr + v) v]/ Vr²
[(Vr - v) v]/ Vr
[(Vr + v) v]/ Vr
[2(Vr - v) v]/ Vr²

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