Generator Head

[RonL]

I would like to have a question answered if there are any electrical engineers on board.
The function of a generator as I understand and what has become an almost universal explanation of efficiency are a bit different.
I can give a brief overview of what I think, but only if someone is willing to discuss the details. This is a serious attempt to find out if my thoughts are in error.

Is there anyone that might have a strong background in this field, that will try to help me get things clear in my mind ?

Thanks
Ron