This slip means that an induction generators operation is thus “asynchronous” (not-synchronised) and the heavier the load attached to an asynchronous generator, the higher is the resulting slip, as higher loads require stronger magnetic fields. More slip is associated with more induced voltage, more current and a stronger magnetic field. Then for an induction motor its operating speed is always less than the desired synchronous speed, and for an induction generator its operating speed has to be above the rated synchronous speed as shown.