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

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

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Hydraulics and Fluid Mechanics in ME
If a vessel containing liquid moves downward with a constant acceleration equal to ā€˜g’ then

None of these
there will be vacuum in the liquid
the pressure in the liquid mass is greater than hydrostatic pressure
the pressure throughout the liquid mass is atmospheric

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