Hydraulics and Fluid Mechanics in ME
Buoyant force is

The resultant force on a body due to the fluid surrounding it
Equal to the volume of liquid displaced
The force necessary to maintain equilibrium of a submerged body
The resultant force acting on a floating body

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Hydraulics and Fluid Mechanics in ME
In case of flow through parallel pipes,

The head loss for all the pipes is same
The total discharge is equal to the sum of discharges in the various pipes
Both (A) and (B)
The total head loss is the sum of head losses in the various pipes

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Hydraulics and Fluid Mechanics in ME
Coefficient of contraction is the ratio of

Loss of head in the orifice to the head of water available at the exit of the orifice
Area of jet at vena-contracta to the area of orifice
Actual velocity of jet at vena contracta to the theoretical velocity
Loss of head in the orifice to the head of water available at the exit of the orifice

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