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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body is called

buoyancy
all the above are correct
center of pressure
upthrust

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Hydraulics and Fluid Mechanics in ME
Differential monometer is used to measure

atmospheric pressure
very low pressure
pressure in pipes, channels etc
difference of pressure between two points

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Hydraulics and Fluid Mechanics in ME
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

None of these
Same as
Less than
More than

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Hydraulics and Fluid Mechanics in ME
If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be

2 meters of water column
6 meters of water Column
3 meters of water column
5 meters of water column

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Hydraulics and Fluid Mechanics in ME
The relation between hydraulic efficiency (ηh), mechanical efficiency (ηm) and overall efficiency (ηo) is

None of these
ηm = ηm × ηh
ηo = ηh × ηm
ηh = ηo × ηm

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Hydraulics and Fluid Mechanics in ME
The tendency of a liquid surface to contract is due to the following property

viscosity
adhesion
cohesion
surface tension

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