what is the difference between impulse and reaction turbines ?

Answer Posted / vivek kumar singh

In impulse turbine, the drop in pressure of steam takes
place only in nozzles and not in moving blades. This is
obtained by making the blade passage of constant cross-
sectional area.
Impulse-Reaction turbine
- In this type, the drop in pressure takes place in fixed
nozzles as well as moving blades.
- The pressure drop suffered by steam while passing through
the moving blades causes a further generation of kinetic
energy within these blades, giving rise to reaction and add
to the propelling force, which is applied through the rotor
to the turbine shaft.
- The blade passage cross-sectional area is varied

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