Irrigation Engineering
The flow-mass curve is graphical representation of

Cumulative discharge, volume and time in chronological order
Discharge and percentage probability of flow being equaled or exceeded
Discharge and time in chronological order
Cumulative discharge and time

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Irrigation Engineering
If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then

Depth of the centre of pressure is 2/3H vertically below the surface
Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅
All listed here
Total pressure on the surface is equal to ωx̅

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Irrigation Engineering
A river is said to be of

All of these
Aggrading type if it builds up its bed to a certain slope
Degrading type if it cuts its bed to a certain slope
Meandering type if it flows in sinuous curve

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