1.

Which of the following gates is not favourble for non ferrous castings?(a) Top gate(b) Bottom gate(c) Parting gate(d) Middle gate

Answer» Right option is (a) Top gate

The best I can explain: When a non ferrous casting is made to drop from the top gate, there is a tendency of it to form dross. Hence, top gates are not favourable for non ferrous castings.


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