Which of the following statements is NOT true about Hydraulic Grade Lines (HGL)?
1
HGL shows the height corresponding to the elevation and pressure head of the Bernoulli equation.
2
HGL can be greater than Energy Grade Line (EGL) in some cases
3
HGL is never greater than Energy Grade Line (EGL).
4
HGL is the height to which liquid would rise in a piezometer tube attached to the flow