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

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Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?

The metal piece will be immersed in mercury by half
Metal piece will sink to the bottom
Whole of the metal piece will be immersed with its top surface just at mercury level
The metal piece will simply float over the mercury

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Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is

Directly proportional to diameter of its impeller
Directly proportional to (diameter)² of its impeller
Inversely proportional to diameter of its impeller
Inversely proportional to (diameter)² of its impeller

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