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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body is called

upthrust
all the above are correct
center of pressure
buoyancy

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Hydraulics and Fluid Mechanics in ME
The weight per unit volume of a liquid at a standard temperature and pressure is called

Specific gravity
Mass density
Specific weight
None of these

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Hydraulics and Fluid Mechanics in ME
Gradually varied flow is

non-steady non-uniform
steady uniform
steady non-uniform
non-steady uniform

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Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

always above the centre line of pipe
never above the energy grade line
All of these
always sloping downward in the direction of flow

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Hydraulics and Fluid Mechanics in ME
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

e > d > m
d > e > m
e > m > d
d > m > e

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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 + hf)
w × Q × H

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