Hydraulics and Fluid Mechanics in ME
The total energy of a liquid particle in motion is equal to

Kinetic energy - (pressure energy + potential energy)
Potential energy - (pressure energy + kinetic energy
Pressure energy - (kinetic energy + potential energy)
Pressure energy + kinetic energy + potential energy

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

Width of channel at the top is equal to twice 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
Depth of channel is equal to the width at the bottom

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