What happens if we connect transformer to the dc supply? All Questions › Category: Electrical Machines › What happens if we connect transformer to the dc supply? 0 Vote Up Vote Down Chetan Shidling Staff asked 5 years ago I need short information. 2 Answers 0 Vote Up Vote Down Chetan Kshirsagar answered 5 years ago The transformer can’t operate on DC supply… The producing magnetic flux is not alternating…. 0 Vote Up Vote Down Chetan answered 5 years ago Secondary side induced emf is zero.. Because,of that the Transformer doesn\’t work on dc supply..☝️