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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be

1000 kg
500 kg
1500 kg
2000 kg

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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)

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

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Hydraulics and Fluid Mechanics in ME
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

Same as
Less than
None of these
More than

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Hydraulics and Fluid Mechanics in ME
A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

σ cosα/4wd
4wd/σ cosα
4σ cosα/wd
wd/4σ cosα

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Hydraulics and Fluid Mechanics in ME
The rise or depression of liquid in a tube due to surface tension will increase in size of tube will

Decrease
May increase or decrease depending on the characteristics of liquid
Increase
Remain unaffected

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Hydraulics and Fluid Mechanics in ME
A streamline is defined as the line

parallel to outer surface of pipe
parallel to central axis flow
of equal yelocity in a flow
along which the pressure drop is uniform

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