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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m3
N/m
N/m2
N-m

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Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

Its density is less
It provides longer length for a given pressure difference
It provides suitable meniscus for the inclined tube
Its vapour pressure is low

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Hydraulics and Fluid Mechanics in ME
The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

Inversely
Directly
Both A and B
None of these

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Hydraulics and Fluid Mechanics in ME
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

One-half
Equal to
One-third
One-fourth

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Hydraulics and Fluid Mechanics in ME
Newton's law of viscosity is a relationship between

Pressure, velocity and temperature
Rate of shear strain and temperature
Shear stress and velocity
Shear stress and rate of shear strain

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of transmission through a pipe is

0.567
0.7666
0.6667
0.5

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