Hydraulics and Fluid Mechanics in ME
Differential manometer is used to measure

Difference of pressure between two points
Very low pressure
Pressure in pipes, channels etc.
Atmospheric pressure

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

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

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