The incorrect statement is

Options :
  1. both a.c. and d.c. dynamo have the field magnet
  2. both a.c. and d.c. dynamo have the armature
  3. both a.c. and d.c. dynamo convert the mechanical energy into electrical energy
  4. both a.c. and d.c. dynamo have the slip rings

Answer and Explanation :-

Answer: Option 4


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