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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

50 cm
52.2 cm
51 cm
52 cm

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Hydraulics and Fluid Mechanics in ME
The property by virtue of which a liquid opposes relative motion between its different layers is called

Viscosity
Osmosis
Surface tension
Coefficient of viscosity

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Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

It provides suitable meniscus for the inclined tube
It provides longer length for a given pressure difference
Its density is less
Its vapour pressure is low

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Hydraulics and Fluid Mechanics in ME
Practical fluids

possess all the above properties
possess surface tension
are compressible
are viscous

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

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

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Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Are equal in size and shape
None of these
Are identical in shape, but differ only in size
Have identical velocities

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