Physics help

okay so um I’ve prepared well enough but I have some problems with ac and dc generators right like no matter who I study from or what notes I use like I cannot comprehend it idek like I get the general info but like using the Flemings on an AC generator js pmo it’s gotten to a point where I’ve js seen sample questions and litrlly learnt their answers but I rlly wanna understand it asw so if anyone can help me out pls 🥀🥀