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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

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

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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
More than 2800
None of these
Less than 2000

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Hydraulics and Fluid Mechanics in ME
In a forced vortex, the velocity of flow everywhere within the fluid is

zero
non-zero finite
minimum
maximum

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Hydraulics and Fluid Mechanics in ME
According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)

A2/3 × M1/3 × m × i
A1/2 × M2/3 × m × i
A × M × m2/3 × i1/2
A × M × m1/2 × i2/3

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Hydraulics and Fluid Mechanics in ME
Flow occurring in a pipeline when a valve is being opened is

unsteady
steady
laminar
vortex

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Hydraulics and Fluid Mechanics in ME
Axial flow pump is started with its delivery valve

Kept fully open
Irrespective of any position
Kept 50% open
Kept fully closed

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