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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a Piezometer tube is in

All of these
N/m2
N/mm2
Head of liquid

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

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

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Hydraulics and Fluid Mechanics in ME
For pipes, turbulent flow occurs when Reynolds number is

less than 2000
less than 4000
more than 4000
between 2000 and 4000

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Hydraulics and Fluid Mechanics in ME
Euler’s dimensionless number relates the following

viscous force and inertial force
inertial force and gravity
viscous force and buoyancy force
pressure force and inertial force

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Hydraulics and Fluid Mechanics in ME
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

less at low temperature and more at high temperature
equal
more
less

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

wH2/2
wH
wH/2
wH2/3

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