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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The speed of a pressure wave through a pipe depends upon

the length of pipe
the bulk modulus for the fluid
the viscosity of fluid
the original head

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Hydraulics and Fluid Mechanics in ME
General energy equation holds for

steady flow
non-uniform flow
laminar flow
turbulent flow

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Hydraulics and Fluid Mechanics in ME
A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

σ cosα/4wd
wd/4σ cosα
4σ cosα/wd
4wd/σ cosα

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Hydraulics and Fluid Mechanics in ME
The flow rate in gear pump

Unpredictable
More or less remains constant with increase in pressure
Decreases with increase in pressure
Increases with increase in pressure

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Hydraulics and Fluid Mechanics in ME
A flow whose streamline is represented by a curve, is called

Three-dimensional flow
Four-dimensional flow
One-dimensional flow
Two-dimensional flow

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Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid is the ratio of

Critical velocity to the viscosity of fluid
Increase in volume to the viscosity of fluid
Shear stress to shear strain
Increase in pressure to the volumetric strain

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