What will happen if the primary of a transformer connected to D.C supply?

                   If the primary of the transformer is connected to D.C supply,the primary will draw a steady current and hence produce constant flux.,so no back emf will be produced.The primary winding will draw excessive current due to low resistance in primary.The result is that the primary will overheat due to this heavy current and burnout.So the primary of the transformer should not connect to the D.C supply.