hi i was thinking about problem that i got and have some ideas. when one come close to the large motor - any motor - size of motorcycle or small car , possible to notice that hair - start move. like someone touching it. right? this is magnetic field touching. right? such large motor always grounded. only super large business use such motors. i am talking about such large motor because no need to special magnetometor to detect magnetic field- hair is enough . what will happen if next to such motor put any coil or any metal body -sheet metal etc? the electricity will be generated. right? if one will grounded this metallic part /coil next to large motor , what will happen? that will effect large motor through magnetic field- without direct contact to any large motor wiring etc. my point. every motor will generate magnetic field - outside of motor body. this magnetic field will have very strong robust effect on metal object that close to motor as much as effect motor performance them self. if some coil must be placed close to the motor then such motor must be tune in same environment-situation.
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