closeup an electric dc motor rotor on a white background

rotor electric motor commutator gear isolated closeup electrical machine white background worm dc coil electromagnetic induction copper wire winding inductor steel engine design single object disassembled electromotor power energy rotary switch moving component shaft drive spare equipment segment transformer sheet metal electro mechanical engineering electrotechnology electrotechnics industry technology electromechanical technical electronics repair service ewaste recycle orange gray brown electricity magnetic field direct current mechanism grooving screw device inside laminations electronic electromechanics green silvered