Hydraulics and Fluid Mechanics in ME
Differential manometer is used to measure

Difference of pressure between two points
Pressure in pipes, channels etc.
Atmospheric pressure
Very low pressure

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

None of these
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

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