Hydraulics and Fluid Mechanics in ME
Mach number is significant in

supersonics, as with projectiles and jet propulsion
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
all of fhe above

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Hydraulics and Fluid Mechanics in ME
Meta-centric height is given as the distance between

Center of buoyancy and metacenter
The center of gravity of the body and the metacenter
The center of gravity of the body and the center of pressure
The center of gravity of the body and the center of buoyancy

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Hydraulics and Fluid Mechanics in ME
The total head of a liquid particle in motion is equal to

Pressure head + kinetic head + potential head
Kinetic head - (pressure head + potential head)
Potential head - (pressure head + kinetic head)
Pressure head - (kinetic head + potential head)

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Hydraulics and Fluid Mechanics in ME
The flow in a pipe or channel is said to be non-uniform when

The liquid particles at different sections have different velocities
The quantity of liquid flowing per second is constant
The liquid particles at all sections have the same velocities
Each liquid particle has a definite path

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