A sand casting process has a mold constant of 2 s/mm2 and solidification exponent of 2

A sand casting process has a mold constant of 2 s/mm2 and solidification exponent of 2

Q. A sand casting process has a mold constant of 2 s/mm2 and solidification exponent of 2. If the solidification time is to be doubled for a given unit   volume   of material, the corresponding reduction in the cast surface area (in %) is    

Ans: 28-31

Sol:

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