A. Misrun
B. Inclusions
C. Blow holes
D. All of the above
Related Mcqs:
- A defect in castings in which a discontinuity is formed due to the imperfect fusion of two streams of metal in the mould cavity is known as
- The defect known as ‘drop’ occurs when the upper surface of the mould cracks and pieces of sand fall into the molten metal. This defect occurs due to
- The passage way of bringing the molten metal to the mould cavity is known as
- A casting process which can produce cylinders by inserting cores into molten metal poured in the mould is
- During burning of grain boundaries
- Slag and dross can be removed by ________________?
- Which of the following holes appear on the surface of the casting when it is machined?
- Which of the following is used on moulds for magnesium castings to prevent metal mould reactions?
- A mould which has good erosion resistance to metal flow and is also collapsible is
- If ash content of coke used in cupola is high then
