Question: Solidification time of a casting will be more if (a) Thermal diffusivity of the moulding sand is more (b) Specific heats of molten metal

Solidification time of a casting will be more if (a) Thermal diffusivity

Solidification time of a casting will be more if (a) Thermal diffusivity of the moulding sand is more (b) Specific heats of molten metal and sand are low (c) Thermal conductivity of moulding sand is less (d) None of the above

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