Electric multiple unit (EMU) or Diesel multiple unit (DMU)
Electric multiple unit (EMU) or Diesel multiple unit (DMU) refers to coaches/cars used for mostly suburban areas. These trains have multiple self propelled coaches/bogies either electric motors or diesel for each car. As opposed to the convention where the passengers are in coaches that are not self-propelling and a locomotive hauls the train, in these cars that carries passengers also has the motive power. EMU/DMU have
TRACTION motors installed to them in the bogies itself which propels the cars.
Following article will explore mainly about the shelf propelling bogie i.e DMC (diesel motor car) of an EMU/DMU.