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Railways NTPC (Technical Ability) Metal Forming, Casting and Cutting Question Bank Metal Forming

  • question_answer
    Which one of the following is the correct temperature range for hot extrusion o aluminium?

    A) \[300-340{}^\circ C\]    

    B) \[350-400{}^\circ C\]

    C) \[430-480{}^\circ C\]                

    D) \[550-650{}^\circ C\]

    Correct Answer: B

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