of such a size that it delivers unit dis-charge at unit head

of such a size that it delivers unit dis-charge at unit power

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

discharge a diameter

head a speed2

head a diameter

Power a speed3

adjustable blades

backward curved blades

vaned diffusion casing

inlet guide blades

friction loss

cavitation

static head

loss of kinetic energy

to transport water downstream without eddies

to convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section

for safety of turbine

to increase flow rate