Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

All of these
always sloping downward in the direction of flow
always above the centre line of pipe
never above the energy grade line

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Hydraulics and Fluid Mechanics in ME
The specific speed of turbine is defined as the speed of a unit

Of such a size that it delivers unit discharge at unit head
Of such a size that it requires unit power per unit head
Of such a size that it produces unit horse power with unit head
Of such a size that it delivers unit discharge at unit power

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