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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Froude's number
Reynold's number
Weber's number
Mach number

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the liquids with rise in temperature

Unpredictable
Increases
Decreases
Remain unaffected

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Hydraulics and Fluid Mechanics in ME
One poise is equal to

1 N-s/m2
0.1 N-s/m2
100 N-s/m2
10 N-s/m2

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Hydraulics and Fluid Mechanics in ME
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

h/w
wh
h
w/h

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Hydraulics and Fluid Mechanics in ME
Power required to drive a centrifugal pump is directly proportional to _________ of its impeller.

Diameter
Fourth power of diameter
Cube of diameter
Square of diameter

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Hydraulics and Fluid Mechanics in ME
The maximum thickness of boundary layer in a pipe of radius r is

r
r/2
2r

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