Hydraulics and Fluid Mechanics in ME
The hydraulic mean depth or the hydraulic radius is the ratio of

Wetted perimeter and diameter of pipe
Area of flow and wetted perimeter
Velocity of flow and area of flow
None of these

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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
The metal piece will simply float over the mercury
Metal piece will sink to the bottom
The metal piece will be immersed in mercury by half

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Hydraulics and Fluid Mechanics in ME
The intensity of pressure at any point, in a liquid, is

Directly proportional to the depth of liquid from the surface
Inversely proportional to the depth of liquid from the surface
Directly proportional to the length of the vessel containing liquid
Directly proportional to the area of the vessel containing liquid

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