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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

viscosity
air resistance
surface tension forces
atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The flow in a pipe is neither laminar nor turbulent when Reynold number is

Between 2000 and 2800
None of these
Less than 2000
More than 2800

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Hydraulics and Fluid Mechanics in ME
Euler's number is the ratio of __________ force to pressure force.

Gravity
Viscous
None of these
Inertia

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Hydraulics and Fluid Mechanics in ME
In case of an airfoil, the separation of flow occurs

at the extreme front of body
any where between rear and front of body depending upon Reynolds number
midway between rear and front of body
at the extreme rear of body

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Hydraulics and Fluid Mechanics in ME
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is

2ρ ω2 r2
ρ ω2 r2
ρ ω2 r2/4
ρ ω2 r2/2

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Hydraulics and Fluid Mechanics in ME
Pitot tube is used for measurement of

pressure
dsscharge
velocity
flow

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