2. Questions Bank
  3. 7th Class
  4. Science
  5. Electric Current and Its Effects

7th Class Science Electric Current and Its Effects Question Bank Electric Current and Its Effects

  • question_answer
    The acting contacts for circuit breakers are made of

    A) Stainless steel

    B) Hard pressed carbon

    C) Porcelain

    D) Copper tungsten alloy

    Correct Answer: D

    Solution :

    Copper tungsten alloy


You need to login to perform this action.
You will be redirected in 3 sec spinner