Alternators are not only driven by turbines, they can be alternator can be driven by any prime mover -including 'motors' if necessary.
what is an alternator driven by
Turbines that are driven by falling water.
It doesn't. The alternator is driven by a belt that goes around a pulley on the engine. The alternator makes electric by using the engines power. Maybe what you notice is fuel pump or blower fan.
On things like cars you usually have a belt driven alternator to provide electricity to the ignition and all electric functions. But if you have something simpler, like a chain saw or a small outboard engine, then you can have magnets in/on the flywheel that pass by coils to generate electricity for the spark plugs. And that's a magneto ignition system.
Alternators are driven by belts attached to one or more pulleys on the engine to turn the pulley on the alternator.
Yes, I know of no engine where the alternator is driven by the cam belt. The alternator is driven by a drive belt or serpentine belt.
The alternator is driven by a belt. Follow the belts and you will find the alternator.
A steam turbine/generator in a power station, a small gasoline powered generator, or a 12v alternator in your car driven by the engine.
The alternator is belt driven off the front of the engine.
The alternator is driven by the serpentine belt. Follow the belt around the engine and you will find the alternator.
The alternator is bolted to your engine . It is one of the items that is driven by your serpentine belt
by an amortisseur coil