A stage of an impulse turbine consists of a set of nozzles and a set of blades mounted on the rotor. The nozzles are designed to convert the pressure energy of the fluid into kinetic energy, while the blades are designed to convert the kinetic energy of the fluid into mechanical energy.
The stages of an impulse turbine are typically arranged in series, with the fluid flowing from one stage to the next. The number of stages in a turbine depends on the amount of energy that needs to be extracted from the fluid.
The efficiency of an impulse turbine is determined by the design of the nozzles and blades, as well as the number of stages in the turbine. The higher the efficiency of the turbine, the more mechanical energy is extracted from the fluid.
