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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

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

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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

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

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

submerged body
displaced volume of the fluid
volume of the fluid vertically above the body
volume of the floating body

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Hydraulics & Fluid Mechanics
Flow of water in a pipe about 3 meters in diameter can be measured by

rotameter
pitot tube
orifice plate
venturi

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

co-efficient of viscosity
osmosis
surface tension
viscosity

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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

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

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