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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The center of gravity of the volume of the liquid displaced by an immersed body is called

center of gravity
metacentre
center of buoyancy
center of pressure

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Hydraulics and Fluid Mechanics in ME
The weight per unit volume of a liquid at a standard temperature and pressure is called

Specific weight
Mass density
None of these
Specific gravity

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Hydraulics and Fluid Mechanics in ME
Ratio of inertia force to elastic force is known as

Weber’s number
Mach number
Froude number
Reynold’s number

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of transmission through a pipe is

0.567
0.7666
0.6667
0.5

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Hydraulics and Fluid Mechanics in ME
Air vessels in reciprocating pump are used to

Smoothen flow
Reduce acceleration to minimum
Save pump from cavitations
Increase pump efficiency

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Hydraulics and Fluid Mechanics in ME
When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.

Geometric mean
Difference
Arithmetic mean
Sum

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