Electromagnetic generators themselves are not radioactive. An electromagnetic generator, also known as a dynamo or alternator, is a device that converts mechanical energy into electrical energy using electromagnetic induction. It typically consists of rotating magnets and stationary coils of wire. The process of electromagnetic induction involves the interaction of magnetic fields and electrical conductors, but it does not produce or emit radiation.
However, it's worth noting that some power generation methods, such as nuclear power plants, can produce electricity through the use of radioactive materials. In these cases, the electricity generated by the electromagnetic generators is a result of the nuclear reactions taking place, but the generators themselves are not inherently radioactive.
It's important to differentiate between the generator itself and the method by which it produces electricity. The generator may be part of a larger system that utilizes radioactive materials or processes, but the generator alone does not emit radiation.