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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A fluid having no viscosity is known as

Non-Newtonian fluid
Ideal fluid
Newtonian fluid
Real fluid

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Hydraulics and Fluid Mechanics in ME
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)

waV / 2g
waV² / 2g
waV² / g
waV / g

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Hydraulics and Fluid Mechanics in ME
The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

Remain same
None of these
Decreases
Increases

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Hydraulics and Fluid Mechanics in ME
Axial flow pump is started with its delivery valve

Kept fully open
Irrespective of any position
Kept 50% open
Kept fully closed

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

non-zero and finite
minimum
zero
maximum

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Hydraulics and Fluid Mechanics in ME
For pipes, turbulent flow occurs when Reynolds number is

more than 4000
between 2000 and 4000
less than 2000
less than 4000

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