Hydraulics and Fluid Mechanics in ME
In an isothermal atmosphere, the pressure

increases exponentially with elevation
varies in the same way as the density
decreases linearly with elevation
remains constant

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Hydraulics and Fluid Mechanics in ME
The hammer blow in pipes occurs when

There is excessive leakage in the pipe
The pipe bursts under high pressure of fluid
The flow of fluid through the pipe is gradually brought to rest by closing of the valve
The flow of fluid through the pipe is suddenly brought to rest by closing of the valve

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

Each liquid particle has a definite path
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

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