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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The mercury does not wet the glass. This is due to the property of the liquid known as

Cohesion
Viscosity
Adhesion
Surface tension

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Hydraulics and Fluid Mechanics in ME
The units of dynamic or absolute viscosity are

metres² per sec
kg sec/meter
newton-sec per meter
newton-sec² per meter

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Hydraulics and Fluid Mechanics in ME
The runaway speed of a hydraulic turbine is the speed

At full load
At which the turbine will run freely without load
At which there will be no damage to the runner
Corresponding to maximum overload permissible

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Hydraulics and Fluid Mechanics in ME
If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

rise until its weight equals the buoyant force
tend to move downward and it may finally sink
None of these
float

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Hydraulics and Fluid Mechanics in ME
Center of pressure compared to e.g. is

Above or below depending on area of body
At same point
Above it
Below it

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Hydraulics and Fluid Mechanics in ME
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if

The area is horizontal
The area is vertical
The area is inclined
All of these

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