In centrifugal castings, the cores are generally made of Production Engineering Mcqs May 28, 2019 BILAL KHATTAK0 A.Green sand and molasses B.Wax C.Plastic D.Plaster of paris E.Cores are not used Related Mcqs:Vertical centrifugal castings as compared to horizontal centrifugal castings are spun atGreen sand moulds areBlow holes in castings are due toThe advantage of centrifugal casting isWarped castings may be produced due toWhich of the following is used on moulds for magnesium castings to prevent metal mould reactions?Plaster patterns and core boxes are made ofConsumable patterns are made ofShot blasting is the process for the cleaning ofDraft allowance on castings is generally