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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The flow in a pipe is neither laminar nor turbulent when Reynold number is

Less than 2000
None of these
Between 2000 and 2800
More than 2800

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of o floating in a fluid of same specific gravity a will

sink to bottom
be fully immersed with top surface at fluid surface
partly immersed
float over fluid

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Sixteen times
Double
Eight times
Four times

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Hydraulics and Fluid Mechanics in ME
The normal stress in a fluid will be constant in all directions at a point only if

It is at rest
It has zero viscosity
It has uniform viscosity
It is incompressible

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Hydraulics and Fluid Mechanics in ME
The volume of a fluid __________ as the pressure increases.

Remains same
None of these
Increases
Decreases

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Hydraulics and Fluid Mechanics in ME
Poise is the unit of

shear stress in fluids
capillarity
viscosity
surface tension

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