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Hydraulics & Fluid Mechanics

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

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

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Hydraulics & Fluid Mechanics
A fluid is said to be ideal, if it is

inviscous
incompressible
inviscous and compressible
inviscous and incompressible

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Hydraulics & Fluid Mechanics
Pressure of the order of 10''' torr can be measured by

Micro-manometer
ionisastion gauge
Bourdon tube
Pirani Gauge

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Hydraulics & Fluid Mechanics
The difference of pressure between the inside and outside of a liquid drop is

(a)p = Txr
(d)p = 2T/r
p = T/2r
(b)p = T/r

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Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

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

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Hydraulics & Fluid Mechanics
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

All of these
the area is vertical
the area is inclined
the area is horizontal

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