Q. When the molten metal leaks out of mould which defect occurs?
✅ Correct Answer: (A)
run out
Explanation: a run out occurs when molten metal leaks out of the mould during pouring. this is caused by defecting moulding boxes, faulty clamping and weighing and by casting too near the edge of the box. this defect is avoided by modifying the moulding system, providing proper line and providing proper gating system.