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