Q.

Castings made by the centrifugal casting process have negligible porosity.

A. true
B. false
Answer» A. true
Explanation: in centrifugal casting, the inclusions such as slag and oxides get segregated towards the centre and can be easily removed by a machining process. and also the application of pressure on the metal throughout the solidification causes the porosity to be eliminated and gives rise to dense metal.
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