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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

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

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Hydraulics and Fluid Mechanics in ME
The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)

w/h
wh
h/w
w

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Hydraulics and Fluid Mechanics in ME
The unit of dynamic viscosity in S.I. units is

N-m/s²
Stoke
Poise
N-s/m²

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Hydraulics and Fluid Mechanics in ME
If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.

None of these
Dynamic similarity
Geometric similarity
Kinematic similarity

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Hydraulics and Fluid Mechanics in ME
A point, in a compressible flow where the velocity of fluid is zero, is called

Stagnation point
None of the listed here
Critical point
Vena contracta

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Hydraulics and Fluid Mechanics in ME
In an isothermal atmosphere, the pressure

remains constant
increases exponentially with elevation
decreases linearly with elevation
varies in the same way as the density

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