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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as

Submerged weir
Broad-crested weir
Ogee weir
Narrow-crested weir

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Hydraulics and Fluid Mechanics in ME
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

Remains horizontal
Falls on the front end
Falls on the back end
Becomes curved

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Hydraulics and Fluid Mechanics in ME
The tendency of a liquid surface to contract is due to the following property

viscosity
surface tension
cohesion
adhesion

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

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Hydraulics and Fluid Mechanics in ME
Any change in load is adjusted by adjusting following parameter on turbine

Net head
Absolute velocity
Flow
Blade velocity

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Hydraulics and Fluid Mechanics in ME
An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.

Free
Full
Partially
None of these

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