I was pondering that you could drive any variety of common electric motors/pumps for some purpose.
Electric fan, water pump, maybe oil pump, maybe even A/C.
You can't. The frequency is way wrong. I forget how many poles a typical alternator is, but its quite a few. I am repurposing an old Leece Neville 24 volt to do DC motor interpole testing, and our target is to get 400 hz out of it at 100 amps. You can't drive an alternator slow enough to get 60 hz and get any reasonable output.
The only AC motor that might work is a universal AC/DC motor since the speed is voltage not frequency dependent, but it would have to be de-rated due to the higher frequency. Higher frequency = more impedance = more internal motor heating.
