There was a scientist around the same time as tesla named something De Palma he invented a machine that is called the N-Machine(there arre a few names actually) the N-Machine is a genarator that isn't a motor I don't know how it works and I was hoping someone could explain to me how it did also supposivly if you were to run the n-machine at its intended usage speed(several thousand RPM) you would end up with a perpetual engine because of how much energy output it makes if you would to put it back into the engine thats spinning the N-Machine even with energy loss you would still be able to spin the N-Machine at its intended usage speed.