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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Mouthpiece
Notch
Nozzle
Weir

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

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Hydraulics and Fluid Mechanics in ME
The velocity of jet of water traveling out of opening in a tank filled with water is proportional to

V/T
h/2
Head of water (h)
h²

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water from deep wells?

Jet pump
Reciprocating pump
Air lift pump
Centrifugal pump

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Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is

π w ω² r²/2g
π w ω² r²/4g
π w ω² r⁴/4g
π w ω² r³/4g

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Hydraulics and Fluid Mechanics in ME
The total energy line lies over the hydraulic gradient line by an amount equal to the

Pressure head + velocity head
Pressure head - velocity head
Velocity head
Pressure head

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