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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The liquid used in manometers should have

Low density
Low surface tension
High surface tension
High density

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Hydraulics and Fluid Mechanics in ME
The magnitude of water hammer depends upon the

Elastic properties of the liquid flowing through the pipe
Elastic properties of the pipe material
Speed at which the valve is closed
All of these

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Hydraulics and Fluid Mechanics in ME
Gradually varied flow is

non-steady non-uniform
non-steady uniform
steady non-uniform
steady uniform

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to

Bernoulli’s theorem
Equilibrium of a floating body
Archimedes’ principle
Buoyancy

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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
Specific gravity
Mass density
None of these

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Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2000 is called

Sub-sonic velocity
Lower critical velocity
Super-sonic velocity
Higher critical velocity

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