Sub surface porosity can be decreased by_______________?
(A) Decreasing the sprue length
(B) Decreasing the sprue thickness
(C) Increasing the melting temperature
(D) Increasing the mould temperature
Sub surface porosity can be decreased by_______________?
(A) Decreasing the sprue length
(B) Decreasing the sprue thickness
(C) Increasing the melting temperature
(D) Increasing the mould temperature
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