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Hydraulics and Fluid Mechanics in ME

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.

Less than
More than
None of these
Same as

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Hydraulics and Fluid Mechanics in ME
If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is

43924
43892
27/8
44078

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Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

Inversely proportional to (radius)2
Inversely proportional to (radius)4
Directly proportional to (radius)4
Directly proportional to (radius)2

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Hydraulics and Fluid Mechanics in ME
The speed ratio in case of Francis turbine varies from

0.15 to 0.3
0.6 to 0.9
0.4 to 0.5
1 to 1.5

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

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

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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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