Hydraulics and Fluid Mechanics in ME
The flow ratio of Francis turbine is defined as the ratio of the

Velocity of runner at inlet to the velocity of flow at inlet
Theoretical velocity of jet to the velocity of flow at inlet
Velocity of flow at inlet to the theoretical jet velocity
None of these

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Hydraulics and Fluid Mechanics in ME
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

It is not possible to conduct this experiment with any other tube
All of these
It is easier to see through the glass tube
Glass tube is cheaper than a metallic tube

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