Railways Technical Ability Metal Forming, Casting and Cutting Question Bank Metal Casting

  • question_answer Which of the following materials are used for making patterns in investment casting method?
    1. Wax                         
    2. Rubber
    3. Wood                       
    4. Plastic
    Select the correct answer using the code given below:

    A) Only 1 and 3                 

    B) Only 2 and 3

    C) Only 1, 2 and 4 

    D) Only 2, 3 and 4

    Correct Answer: C

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