Hi, I was wondering if some kind soul could explain to me why salient pole machines are preffered in hydropower? From what I've read salient pole machines are preffered for applications with "low" rpm, while non-salient poles are used for applications that runs at higher rpm. O What is the reason for this; that salient poles are preffered for low rpm and non-salient poles for high rpm applications? I'm not sure if I'm asking in the right section of this forum, perhaps this thread also belongs in the mechanical section, I'm not sure. Best regards.