 
 <prompt> Wetin go happun to di rotor poles once di motor don start dey run? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Finally, hysteresis synchronous motors typically dey (essentially) two-phase motors with a phase-shifting capacitor for one phase. Dem dey start like induction motors, but when slip rate decrease well well, the rotor (a smooth cylinder) go come dey magnetized temporarily. Its distributed poles go make am dey act like a PMSM. The rotor material, like that of a common nail, go stay magnetized, but e fit also be demagnetized with small small difficulty. Once e start to run, the rotor poles go stay for one place; dem no go dey drift. 