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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The region between the separation streamline and the boundary surface of the solid body is known as

boundary layer
drag
lift
wake

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Hydraulics & Fluid Mechanics
Coefficient of velocity for Borda’s mouth piece running full is

1.00
0.707
0.855
0.611

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Hydraulics & Fluid Mechanics
The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

always below the centroid of the area
at the centroid of the submerged area
always above the centroid of the area
None of these

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Hydraulics & Fluid Mechanics
The surface tension of mercury at normal temperature compared to that of water is

more or less depending on size of glass tube
same
more
less

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Hydraulics & Fluid Mechanics
A large Roynold number is indication of

LAMINAR FLOW
turbulent flow
smooth and streamline flow
highly turbulent flow.

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

it is the best liquid
its vapour pressure is so low that it may be neglected
the height of barometer will be less
both (B) and (C)

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