1.

A gating ratio of 1 : 2 : 4 is used to design the gating system for magnesium alloy casting. This gating ratio refers to the cross-section areas of the various gating elements as given below: 1. Down sprue 2. Runner bar 3. Ingates The correct sequence of the above elements in the ratio 1 : 2 : 4 is:

A. 1, 2 and 3
B. 1, 3 and 2
C. 2, 3 and 1
D. 3, 1 and 2
Answer» B. 1, 3 and 2


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