Hydraulics and Fluid Mechanics in ME
The Newton's law of resistance is based on the assumption that the

Fluid particles do not exert any influence on one another
Space around the body is completely filled with the fluid
Planes of the body are completely smooth
All of these

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Actual velocity of jet at vena contracta to the theoretical velocity
Actual discharge through an orifice to the theoretical discharge
None of these
Area of jet at vena contracta to the area of orifice

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