Complete circle characteristics of per cent head and per centtorque plotted parametrically with per cent capacity as ordinate andper cent speed as abscissa are generally derived for an ideal case.
The experimental circle characteristics are presented asdetermined for an axial flow and mixed flow pump of representativecommercial practice and a comparison of the three basic types ofturbomachine; axial flow, mixed flow and radial flow (or centrifugal)is made. A new method of plotting power ratio radially onthe same axes is also presented and compared for the same threeunits.
