Answer / jitendra kumar

In Impulse-Turbine:- The blade have symmetrical
In Reaction-Turbine:-The blade have assymmetrical

Answer / karthick

impulse turbine works on the principle of impulse ie., a
force acting for a short period of time and the fluid flows
across the vane but reaction turbine works on recative
forces i.e., due to force of the high velocity fluid, the
vane tends to rotate in the opposite direction e.g the lawn
sprinkler works on reative forces

Answer / veerasiddareddy

In impulse turbine,the enthalpy drop(pressure
drop)completely, occurs in the nozzle itself and when the
fluid pass over the moving blades it will not suffer
pressure drop again.Hence pressure remain constant when the
pass over the rotor blades.

In reaction turbine ,addition to the pressure drop occurs in
the nozzle there will also be pressure drop occurs when the
fluid passes over the rotor blades.


by veerasiddareddy

Answer / venkatesh

In case of impulse turbine(pelton) there is no back
pressure so draft tube is not used where as in reaction
type turbine(francis) back pressure is created so draft
tube is used to discharge the fluid

Answer / dilip

Impulse turbines uses force that convert this force into
energy that is required to rotate the rotor and there is
loss of energy ,heat etc.... Whereas in reaction turbine
there is a set of movable and fixed blades that converts
the energy to move the rotor i.e. the pressure energy is
converted for both reasons ie the reaction and the impulse.

Answer / pushkal

In impulse turbine there is no pressure drop in moving
blades, i.e. they are having constant cross section. Only
stationary balde or nozzle is used for pressure drop, i.e.
velocity increase.

In reaction turbine there is a pressure drop in moving and
stationary both blades, i.e. both blades act as a nozzle
for next pcoming blade, i.e. pressure drop & velocity
increase.

Answer / kamal kumar barad

the main difference is -in impulse turbine (steam) both heat
energy & pressure energy are converted into kinetic
energy.but the pressure remains constant when steam passes
through vanes,but in reaction turbine the pressure drops
when passes through the moving blades

Answer / rohit choudhary

1)impulse turbine is always installed above the tail race whereas reaction turbine can be installed above or below the tail race.

2)no draft tube is used in impulse turbine whereas draft tube is used in reaction turbine.

Answer / nipun sharma smvdu

in case of impulse turbine area of blade channel is constant
whereas in case of reaction turbine area of blade is varying.

also in case of impulse turbine not much power is developed
while in case of reaction turbine much power is developed.

Answer / winayak korpad

the main difference between impulse & reaction turbine is:
impulse turbine= converts whole pressure energy into K.E.
reaction turbine= K.E+ pressure energy

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