McqMate
Q. |
Which defect is caused due to the conversion of moisture to steam because of the heat of molten metal? |
A. | blow holes |
B. | open blows |
C. | air inclusions |
D. | cold shut |
Answer» A. blow holes | |
Explanation: blow holes are entrapped gases, which are formed as a result of gases from mould, molten metal and stream sand. further these are caused due to the conversion of moisture to steam because of the heat of molten metal. |
View all MCQs in
Manufacturing Technology 1No comments yet