Hydraulics and Fluid Mechanics in ME
In open channels, the specific energy is the

Total energy measured with respect to the datum passing through the bottom of the channel
Kinetic energy plotted above the free surface of water
Total energy per unit discharge
Total energy measured above the horizontal datum

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?

The pressure on the bottom of the wall is zero
The pressure on the wall at the liquid level is minimum
The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
The pressure on the bottom of the wall is maximum

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