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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is

10.2/m sec
9.75 m/sec²
10m/sec²
9.81 m/sec²

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Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the

center of the volume of floating body
centroid of the volume of fluid vertically above the body
center of gravity of any submerged body
centriod of the displaced volume of fluid

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Hydraulics & Fluid Mechanics
Specific weight of sea water is more that of pure water because it contains

All of these
dissolved salt
dissolved air
suspended matter

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Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

NEGLIGIBLE
SAME AS BUOYANT FORCE
None of these
ZERO

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Hydraulics & Fluid Mechanics
For a floating body to be in equilibrium

a righting couple should be formed
meta center should be above e.g.
All of these
center of buoyancy and e.g. must lie on same vertical plane

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Hydraulics & Fluid Mechanics
Drag force is a function of i) projected area of the body ii) mass density of the fluid iii) velocity of the body The correct answer is

(i) and (iii)
(i), (ii) and (iii)
(ii) and (iii)
(i) and (ii)

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