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Hydraulics & Fluid Mechanics

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

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

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Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

NEGLIGIBLE
SAME AS BUOYANT FORCE
ZERO
None of these

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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

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

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Hydraulics & Fluid Mechanics
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

surface tension
viscosity
osmosis
co-efficient of viscosity

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Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

1.01
0.95
0.86
0.611

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Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEWTONS
NEW TONS/M
NEWTONS/M
NETON/M

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