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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific weight
specific gravity
specific mass
specific density

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

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

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Hydraulics & Fluid Mechanics
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

6.4 m above the hydraulic gradient
5.0 above the hydraulic gradient
2.4 m above the hydraulic gradient
10.0 m above the hydraulic gradient

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Hydraulics & Fluid Mechanics
In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is

40 M/SEC
33 M/SEC
22.5 M/SEC
50 M/SEC

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Hydraulics & Fluid Mechanics
An open vessel of water is accelerated up an inclined plane. The free water surface will

make an angle in opposite direction to inclination of inclined plane
be horizontal
any one of above is possible
make an angle in direction of inclination of inclined plane

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Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

None of these
NEGLIGIBLE
SAME AS BUOYANT FORCE
ZERO

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