Hydraulics and Fluid Mechanics in ME
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

Becomes curved
Remains horizontal
Falls on the back end
Falls on the front end

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

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

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