In a diesel-electric multiple unit (DEMU) a diesel engine drives an electrical generator or an alternator which produces electrical energy. The generated current is then fed to electric traction motors on the wheels or bogies in the same way as a conventional diesel electric locomotive.

This Moula Ali based DEMU rakes was gearing up to start for Bolarum (BMO) from Secunderabad (SC) junction when framed by Sam on 31st Oct 2013.