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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

osmosis
viscosity
co-efficient of viscosity
surface tension

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Hydraulics & Fluid Mechanics
The discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is

NOT PREDICTABLE FROM THE GIVEN DATA
TRANSITION FLOW
TURBULENT FLOW
LAMINAR FLOW

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Hydraulics & Fluid Mechanics
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

remain same
increase/decrease depending on depth of immersion
increase
decrease

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Hydraulics & Fluid Mechanics
Uniform flow occurs when

size and cross section change uniformly along length
size and shape of the cross section in a particular length remain constant
the flow is steady
the flow is streamline

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Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

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

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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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