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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Fluid is a substance which offers no resistance to change of

Flow
Shape
Pressure
Volume

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Hydraulics and Fluid Mechanics in ME
In a free nappe,

The pressure below the nappe is negative
The pressure below the nappe is atmospheric
The pressure above the nappe is negative
The pressure above the nappe is atmospheric

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as

Steady flow
Vortex flow
Turbulent flow
Uniform flow

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Hydraulics and Fluid Mechanics in ME
A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

Lies above
Lies below
Coincides with
None of these

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of gases
specific gravity of liquids
relative humidity
specific gravity of solids

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately

20 mm
5 mm
30 mm
10 mm

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