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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a free vortex motion, the radial component of velocity everywhere is

zero
minimum
maximum
non-zero and finite

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Hydraulics and Fluid Mechanics in ME
The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is

[wa (V - v)]/g
[wa (V - v²)]/g
[wa (V - v)]/2g
[wa (V - v)²]/2g

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Hydraulics and Fluid Mechanics in ME
The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

Compressibility
Surface tension
Capillarity
Viscosity

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Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

shows erratic behaviour
remains same
increases
decreases

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Hydraulics and Fluid Mechanics in ME
With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on

a cylinder
a circular disc of plate held normal to flow
a streamlined body
a sphere

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Hydraulics and Fluid Mechanics in ME
Head developed by a centrifugal pump is

None of these
Proportional to diameter of impeller
Proportional to speed of impeller
Proportional to diameter and speed of impeller

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