Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Be fully immersed with top surface at fluid surface
Sink to bottom
Float over fluid
Partly immersed

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

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Hydraulics and Fluid Mechanics in ME
Stanton diagram is a

semi-log plot of friction factor against Reynolds number
semi-log plot of friction factor against relative roughness
log-log plot of friction factor against Reynolds number
log-log plot of relative roughness against Reynolds number

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Hydraulics and Fluid Mechanics in ME
For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal

ratio of inertial force to force due to viscosity
all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
ratio of inertial force to force due to gravitation
ratio of inertial force to force due to surface tension

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