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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The buoyancy depends on

viscosity of the liquid
depth of immersion
pressure of the liquid displaced
mass of liquid displaced

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Hydraulics and Fluid Mechanics in ME
A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

d²/12 + x̅
b²/12 + x̅
(bd²/12) + x̅
(d²/12 x̅) + x̅

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Hydraulics and Fluid Mechanics in ME
Liquids

None of the listed here
Are not affected by change in pressure and temperature
Occupy definite volume
Cannot be compressed

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Hydraulics and Fluid Mechanics in ME
For 450 m head of water, _________ shall be used.

Pelton wheel
Francis turbine
Kaplan turbine
None of these

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Hydraulics and Fluid Mechanics in ME
The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as

steady flow
one dimensional flow
turbulent flow
uniform flow

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Hydraulics and Fluid Mechanics in ME
When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wave), the portion of pipe length subjected to maximum head is

L
L/4
L/3
L/2

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