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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2000 is called

Super-sonic velocity
Sub-sonic velocity
Lower critical velocity
Higher critical velocity

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of rectangular section will be maximum, if

Its breadth is thrice the depth
Its depth is twice the breadth
Its depth is thrice the breadth
Its breadth is twice the depth

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Hydraulics and Fluid Mechanics in ME
For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is

a function of Reynolds number and relative roughness
dependent on relative roughness only
constant
dependent only on Reynolds number

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Hydraulics and Fluid Mechanics in ME
Barometer is used to measure

Atmospheric pressure
Pressure in pipes, channels etc.
Very low pressure
Difference of pressure between two points

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel is

Inward flow impulse turbine
Outward flow impulse turbine
Inward flow reaction turbine
Tangential flow impulse turbine

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Hydraulics and Fluid Mechanics in ME
Head developed by a centrifugal pump depends on

Impeller diameter
Speed
Fluid density
Both (A) and (B) above

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