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

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of trapezoidal section is maximum when

Depth of channel is equal to the width at the bottom
The sloping side is equal to half the width at the top
The sloping side is equal to the width at the bottom
Width of channel at the top is equal to twice the width at the bottom

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