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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The volumetric change of the fluid caused by a resistance is known as

Volumetric strain
Volumetric index
Adhesion
Compressibility

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Hydraulics and Fluid Mechanics in ME
The specific weight of sea water is __________ that of pure water.

Same as
Less than
None of these
More than

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Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

(2A√H₁)/(Cd × a√2g)
(2AH₁)/(Cd × a√2g)
(2AH₁²)/(Cd × a√2g)
(2AH₁3/2)/(Cd × a√2g)

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Hydraulics and Fluid Mechanics in ME
In axial flow fans and turbines, fluid enters and leaves as follows

Radially, axially
Radially, radially
Axially, axially
Axially, radially

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Hydraulics and Fluid Mechanics in ME
One poise is equal to

100 N-s/m2
10 N-s/m2
1 N-s/m2
0.1 N-s/m2

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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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