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  1. If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

    2. A.

     10 mm/m
    B.

     16 mm/m
    C.

     20 mm/m
    D.

     26 mm/m

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    Answer : Option D

    Explanation :

    If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be 26 mm/m

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