My understanding is that the author is not a technologist and that these aren't literal physical descriptions of what happened with the turbines. The simplest g

My understanding is that the author is not a technologist and that these aren't literal physical descriptions of what happened with the turbines. The simplest generators maintain a steady angular velocity that (when normalized for the number of poles) corresponds to the frequency of the output signal. To give the benefit of the doubt to the author, it is also true that a turbine shaft can be connected to a generator via a gearbox, in which configuration a faster turbine would correspond to more power delivered to the generator at the same generator RPM.