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Hydraulics and Fluid Mechanics in ME

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

Product
Sum
Ratio
Different

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Pascal’ law
Newton’s law of motion
Continuity equation
Newton’s law of viscosity

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Hydraulics and Fluid Mechanics in ME
Poise is the unit of

capillarity
shear stress in fluids
surface tension
viscosity

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Hydraulics and Fluid Mechanics in ME
The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow)

0.423 D
0.707 D
0.223 D
0.577 D

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Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2800, is called

Sub-sonic velocity
Lower critical velocity
Higher critical velocity
Super-sonic velocity

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Hydraulics and Fluid Mechanics in ME
The mass per unit volume of a liquid at a standard temperature and pressure is called

Mass density
Specific weight
None of these
Specific gravity

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