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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

equal
more
less at low temperature and more at high temperature
less

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Hydraulics and Fluid Mechanics in ME
Cavitation is caused by

high velocity
weak material
high pressure
low pressure

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Hydraulics and Fluid Mechanics in ME
Center of pressure on an inclined plane is

Above the Centroid
Below the Centroid
At metacentre
At the Centroid

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Hydraulics and Fluid Mechanics in ME
The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the

Pressure head - velocity head
Velocity head
Pressure head + velocity head
Pressure head

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Hydraulics and Fluid Mechanics in ME
The force per unit length is the unit of

Capillarity
Compressibility
Viscosity
Surface tension

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Hydraulics and Fluid Mechanics in ME
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

0.87
0.46
0.64
0.78

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