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?

The metal piece will be immersed in mercury by half
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 simply float over the mercury

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Hydraulics and Fluid Mechanics in ME
Which of the following is an incorrect statement ?

Coefficient of contraction of a venturimeter is unity
None of these
Flow nozzle is cheaper than venturimeter but has higher energy loss
Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined

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Hydraulics and Fluid Mechanics in ME
When a liquid is flowing through a pipe, the velocity of the liquid is

Maximum at the centre and zero near the walls
Minimum at the centre and maximum near the walls
Zero at the centre and maximum near the walls
Maximum at the centre and minimum near the walls

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