General—Nature of losses due to rotor eccentricity—Outline of experiments— Description of motor employed—Flux distribution with rotor winding open—Flux distribution with rotor winding closed—Iron losses—Total no-load losses of motor—Variation of stator magnetising current with eccentricity—Magnetic pull on eccentric rotor—Value of rotor currents set up by eccentricity—Oscillograph records of rotor voltage—Conclusions.