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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Water is _________ liquid.

An incompressible
None of these
Both A and B
A compressible

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

More than
None of these
Less than
Equal to

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Hydraulics and Fluid Mechanics in ME
When the Mach number is between ___ the flow is called super-sonic flow.

1 and 2.5
2.5 and 4
1 and 6
4 and 6

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Hydraulics and Fluid Mechanics in ME
In order to measure the flow with a Venturimeter, it is installed in

Horizontal line
Inclined line with flow downwards
Inclined line with flow upwards
Any direction and in any location

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

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

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Hydraulics and Fluid Mechanics in ME
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

Q = (2/3). Cd × a × h
Q = (3Cd × a)/√(2h)
Q = (Cd × a)/√(2gh)
Q = Cd × a × 2gh

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