Hydraulics and Fluid Mechanics in ME
A floating body is said to be in a state of stable equilibrium

when its metacentric height is zero
when the metacentre is above the centre of gravity
when the metacentre is below the centre of gravity
only when its centre of gravity is below its centre of buoyancy

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?

The pressure on the bottom of the wall is zero
The pressure on the bottom of the wall is maximum
The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
The pressure on the wall at the liquid level is minimum

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Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is

Directly proportional to diameter of its impeller
Directly proportional to (diameter)² of its impeller
Inversely proportional to (diameter)² of its impeller
Inversely proportional to diameter of its impeller

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