ABSTRACT
The purpose of the process described above is either to pressurize the fluid or to produce power. Useful work done by the fluid on the turbine rotor appears outside the casing as work done in turning; for example, it can tum the rotor of a generator. A pump, on the other hand, receives energy from an external electric motor and imparts this energy to the fluid in contact with the rotor, or impeller, of the pump.
