i) Principle of action:
a) Impulse turbine b) Reaction turbine c) Impulse reaction turbine
ii) Direction of steam flow:
a) axial flow turbine b) Radial flow turbine c) Tangential flow turbine
iii)method of governing:
a)Throttle governing turbine b) Nozzle control governing turbine c) By pass governing turbine d) combination of all
iv) Steam pressure:
a)High pressure turbine b) Low pressure turbine c) Medium pressure turbine