I find the variety of electric motors to be remarkable, and the textbook explanations of their operation nearly impossible to relate to any particular motor I’m trying to fix. Usually I don’t know why it works, even after I fix it, unless I take a week to study it, and I rarely have that kind of time. The diagrams in the references never look anything like the real motors!
Enter John Storey of the University of New South Wales Physics Department, and his brilliant How Real Electric Motors Work web pages.
Americans will have to remember that mains frequency in Oz is 50 Hz – hereabouts, line frequency is 60 CPS.