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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

A paraboloid
None of these
A triangle
An ellipse

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Hydraulics and Fluid Mechanics in ME
Which of the following is an example of laminar flow?

Underground flow
Flow past tiny bodies
All of these
Flow of oil in measuring instruments

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Hydraulics and Fluid Mechanics in ME
The maximum thickness of boundary layer in a pipe of radius r is

r/2
r
2r

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Hydraulics and Fluid Mechanics in ME
Impulse turbine is generally fitted

Little above the tail race
At the level of tail race
About 2.5 m above the tail race to avoid cavitations
Slightly below the tail race

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

Elastic
Viscous
Inertia
Surface tension

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Hydraulics and Fluid Mechanics in ME
Practical fluids

are viscous
are compressible
possess all the above properties
possess surface tension

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