Is there any generator and motors which is 100% noiseless?
The simple answer is no – but for specialized uses the answer is almost. If you are talking about fuel driven motors, not much of a chance, but if you are talking about electric motors and generators, the chances are much higher – much of the noise comes from imbalance and air being moved in cooling, so building the motor or generator to be incredibly balanced and massive enough and finned to be cooled by radiation. Since so often there are other noises, such an effort is relatively useless – as when the motor is driving a pump or a turbine is driving a generator there are slight water noises. Air handling systems in modern theaters are designed to be as noiseless as possible so they don’t intrude on the music or quiet moments in a play. What was your need?
