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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In steady flow of a fluid, the total accele ration of any fluid particle

is independent of coordinates
is never zero
can be zero
is always zero

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Hydraulics and Fluid Mechanics in ME
The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)

w × Q (H - hf)
w × Q × hf
w × Q × H
w × Q (H + hf)

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece is

0.707
0.375
0.855
0.5

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Hydraulics and Fluid Mechanics in ME
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity

Two-third
One-third
Three-fourth
One-half

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Hydraulics and Fluid Mechanics in ME
In an immersed body, centre of pressure is

Below be centre of gravity
At the centre of gravity
Could be above or below e.g. depending on density of body and liquid
Above the centre of gravity

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Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

center of pressure of displaced volume
centroid of the displaced volume of fluid
e.g. of floating body
does not exist

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