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

  • question_answer A hole of 30 mm diameter is to be produced by reaming. The minimum diameter permissible is 30.00 mm while the maximum diameter permissible is 30.05 mm. In this regard, consider the following statements about the reamer size:
    1. The minimum diameter of the reamer cab be less than 30 mm.
    2. The minimum diameter of the reamer cannot he less than 30 mm.
    3. The maximum diameter of the reamer can be more than 30.05 mm.                       
    4. The maximum diameter of the reamer must be less than 30.05 mm.                           
    Of these statements:                              

    A) 1 and 4 are correct         

    B) 1 and 3 are correct   

    C) 2 and 3 are correct         

    D) 2 and 4 are correct

    Correct Answer: A


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