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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)

0.707 R
0.577 R
0.423 R
0.223 R

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Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantites are same

friction loss and flow
friction factor and diameter
flow and length
length and diameter

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

None of these
More than
Less than
Equal to

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Hydraulics and Fluid Mechanics in ME
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is

Slow speed pump with radial flow at outlet
Medium speed pump with radial flow at outlet
High speed pump with axial flow at outlet
High speed pump with radial flow at outlet

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Hydraulics and Fluid Mechanics in ME
A one dimensional flow is one which

involves zero transverse component of flow
takes place in straight lines
is uniform flow
is steady uniform flow

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Hydraulics and Fluid Mechanics in ME
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than

All of these
surface friction
viscosity
frictional force

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