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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure of air __________ with the increase of height from the surface of the earth.

None of these
Does not change
Decreases
Increases

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Hydraulics and Fluid Mechanics in ME
A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

(bd²/12) + x̅
b²/12 + x̅
d²/12 + x̅
(d²/12 x̅) + x̅

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Hydraulics and Fluid Mechanics in ME
Fluid is a substance which offers no resistance to change of

Pressure
Volume
Shape
Flow

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Hydraulics and Fluid Mechanics in ME
A Piezometer tube is used only for measuring

Low pressure
Moderate pressure
Vacuum pressure
High pressure

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Hydraulics and Fluid Mechanics in ME
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

(2/3) × Cd (L - nH) × √(2gh)
(2/3) × Cd (L - nH) × √(2g) × H²
(2/3) × Cd (L - 0.1nH) × √(2g) × H3/2
(2/3) × Cd (L - nH) × √(2g) × H5/2

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Hydraulics and Fluid Mechanics in ME
Which of the following is an example of laminar flow?

Flow of oil in measuring instruments
All of these
Underground flow
Flow past tiny bodies

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