1. Silicon steels transformer stamping 2. Duralumin Cooking utensils

Question

Which of following pairs are correctly matched.                                     

         1. Silicon steels transformer stamping

         2. Duralumin Cooking utensils

         3. Gun metal bearings

         Select the correct answer using the codes given below            

         (a) 1,2 and 3                   (b) 1 and 2

         (c) 1 and 3                      (d) 2 and 3