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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a centrifugal pump casing, the flow of water leaving the

Axial
Vortex
Radial
Centrifugal

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

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

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Hydraulics and Fluid Mechanics in ME
Centre of pressure compared to e.g. is

at same point
above or below depending on area of body
below it
above it

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Hydraulics and Fluid Mechanics in ME
Medium specific speed of turbine implies it is

Any one of the above
Impulse turbine
Francis turbine
Propeller turbine

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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. The saving in case of a double acting reciprocating pump is

0.392
0.884
0.488
0.848

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Hydraulics and Fluid Mechanics in ME
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called

Absolute pressure
Gauge pressure
Vacuum pressure
Positive gauge pressure

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