Turbine There are two types or group of turbine • Reaction Turbine • I mpulse Turbine Impulse Turbine :-Work on principle of impulse moment hence it call impulse turbine . : - At inlet water posses only kinetic energy then it calls as impulse turbine. - Impulse turbines are used in very high 250mto1600 m head. Reaction Turbine :- At inlet water posses both kinetic energy as well as pressure energy so called reaction turbine.