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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Pressure of liquid
Area of mouthpiece
Length of mouthpiece
Velocity of liquid

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Hydraulics and Fluid Mechanics in ME
The units of dynamic or absolute viscosity are

newton-sec per meter
newton-sec² per meter
metres² per sec
kg sec/meter

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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
frictional force
surface friction
viscosity

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Hydraulics and Fluid Mechanics in ME
Reaction turbines are used for

High head and low discharge
Low head and high discharge
Low head
High head

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Hydraulics and Fluid Mechanics in ME
Gradually varied flow is

non-steady uniform
steady uniform
non-steady non-uniform
steady non-uniform

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Hydraulics and Fluid Mechanics in ME
A flow is called sub-sonic, if the Mach number is

Unity
Less than unity
Between 1 and 6
More than 6

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