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

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

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Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?

Whole of the metal piece will be immersed with its top surface just at mercury level
Metal piece will sink to the bottom
The metal piece will be immersed in mercury by half
The metal piece will simply float over the mercury

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