SSC SSC JE Mechanical 2025 Mock Test Series (Paper 1 & Paper 2) Production Engineering (Manufacturing) Metal Casting Casting Defects
Consider the following defects in castings :
|
(A) |
Pinholes |
1. |
Metal starts freezing before reaching the farthest point in the cavity |
|
(B) |
Misrun |
2. |
Entrapped spherical shaped bubbles |
|
(C) |
Cold shut |
3. |
Tiny blow holes occurring either at or just below the casting surface |
|
(D) |
Gas holes |
4. |
Metal starts freezing before reaching the center of the casting for a casting with two gates at its two sides |
Choose the option in which given pairs are correctly matched.
1
A – 2, B – 3, C – 4, D – 1
2
A – 1, B – 2, C – 3, D – 4
3
A – 3, B – 1, C – 4, D – 2
4
A – 3, B – 4, C – 1, D – 2