Hydraulics and Fluid Mechanics in ME
Working principle of dead weight pressure gauge tester is based on

Pascal’s law
Avogadro’s hypothesis
Dalton’s law of partial pressure
Newton’s law of viscosity

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Hydraulics and Fluid Mechanics in ME
The function of guide vanes in a reaction turbine is to

All of the listed here
Allow the required quantity of water to enter the turbine
Allow the water to enter the runner without shock
Allow the water to flow over them, without forming eddies

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