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 flow over them, without forming eddies
Allow the water to enter the runner without shock

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Hydraulics and Fluid Mechanics in ME
When a body is placed over a liquid, it will sink down if

Gravitational force is equal to the up-thrust of the liquid
None of these
Gravitational force is less than the up-thrust of the liquid
Gravitational force is more than the up-thrust of the liquid

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