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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2800, is called

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

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Hydraulics and Fluid Mechanics in ME
General energy equation holds for

laminar flow
steady flow
turbulent flow
non-uniform flow

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is

0.848
0.392
0.884
0.488

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Hydraulics and Fluid Mechanics in ME
Unit of surface tension is

Both of the above
Energy/unit area
Velocity/unit area
It has no units

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Hydraulics and Fluid Mechanics in ME
Which type of the pump is different from others in the same group?

Cam and piston pump
Plunger pump
Gear pump
Screw pump

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Hydraulics and Fluid Mechanics in ME
A differential manometer is used to measure

Difference of pressures between two points in a pipe
Atmospheric pressure
Pressure in Venturimeter
Pressure in pipes and channels

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