Hydraulics and Fluid Mechanics in ME
For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called

Bernoulli’s equation
Continuity equation
Archimedes’s principle
Pascal’s law

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Hydraulics and Fluid Mechanics in ME
Venturimeter is used to

Measure the pressure difference of liquid flowing between two points in a pipe line
Measure the discharge of liquid flowing in a pipe
Measure the velocity of a flowing liquid
Measure the pressure of a flowing liquid

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