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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is

2
1
4
43924

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is

ω².r²/2g
ω.r/4g
ω.r/2g
ω².r²/4g

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

84.8%
39.2%
68.8%
49.2%

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of gases
specific gravity of liquids
specific gravity of solids
relative humidity

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Hydraulics and Fluid Mechanics in ME
Poise is the unit of

capillarity
shear stress in fluids
surface tension
viscosity

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than unity
greater than 4
greater than 2
unity

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