Hydraulics and Fluid Mechanics in ME
Alcohol is used in manometers because

It has low surface tension
It has low vapour pressure
It is clearly visible
It can provide longer column due to low density

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Hydraulics and Fluid Mechanics in ME
The total energy of a liquid particle in motion is equal to

Potential energy - (pressure energy + kinetic energy
Pressure energy + kinetic energy + potential energy
Kinetic energy - (pressure energy + potential energy)
Pressure energy - (kinetic energy + potential energy)

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

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