Hydraulics and Fluid Mechanics in ME
If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.

None of these
Dynamic similarity
Kinematic similarity
Geometric similarity

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

Allow the water to enter the runner without shock
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

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