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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
When a body floating in a liquid, is displaced slightly, it oscillates about

e.g. of body
center of pressure
center of buoyancy
metacentre

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Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

independent of shear stress
maximum at the pipe wall
None of these
zero at the pipe wall

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Hydraulics & Fluid Mechanics
Normal depth in open channel flow is the depth of flow corresponding to

unsteady flow
uniform flow
Steady flow
laminar flow

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Hydraulics & Fluid Mechanics
The units of viscosity are

kg sec/metre
newton-sec/metre
newton-sec/metre2
metre2/se

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Hydraulics & Fluid Mechanics
Which of the following instrument can be used for measuring speed of an aeroplane

pitot tube
Orifice plate
rotameter
Venturimeter

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Hydraulics & Fluid Mechanics
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)

3/4 R
1/3 R
1/2 R
2/3 R

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