Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Have identical velocities
Are identical in shape, but differ only in size
None of these
Are equal in size and shape

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

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