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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Velocity of liquid
Pressure of liquid
Length of mouthpiece
Area of mouthpiece

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Hydraulics and Fluid Mechanics in ME
When the Mach number is less than unity, the flow is called

Sub-sonic flow
Super-sonic flow
Sonic flow
Hyper-sonic flow

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Hydraulics and Fluid Mechanics in ME
The horizontal component of buoyant force is

Same as buoyant force
None of these
Negligible
Zero

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Hydraulics and Fluid Mechanics in ME
The process of diffusion of one liquid into the other through a semi-permeable membrane is called

osmosis
surface tension
viscosity
cohesion

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Hydraulics and Fluid Mechanics in ME
According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

AC × √(m × i)
A × √(m × i)
mi × √(A × C)
C × √(m × i)

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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

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

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