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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The discharge through a V- notch varies as

H3’2
H5’4 where H is head.
H1/2
H5/2

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Hydraulics & Fluid Mechanics
The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

uniform flow
steady flow
incompressible flow
frictionless flow

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Hydraulics & Fluid Mechanics
For a floating body to be in stable equilibrium, its metacentre should be

above the center of gravity.
above the center of buoyancy
between e.g. and center of pressure
below the center of buoyancy

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Hydraulics & Fluid Mechanics
The density of water is 1000 kg/m3 at

20°C
0°C
4°C
0°K

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

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

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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

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

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