engineering recuitment BEL Probationary Engineers Mock Test 2025 Production Engineering (Manufacturing) Metal Casting Casting Defects
Match the casting defects (Group A) with the probable causes (Group B) :
|
Group A |
Group B |
|
P: Hot tears |
1: Improper fusion of two streams of liquid metal |
|
Q: Shrinkage |
2: Low permeability of the sand mould |
|
R: Blow holes |
3: Volumetric contraction both in liquid and solid stage |
|
S: Cold shut |
4: Differential cooling rate |
1
P – 1, Q – 3, R – 2, S – 4
2
P – 4, Q – 3, R – 2, S – 1
3
P – 3, Q – 4, R – 2, S – 1
4
P – 1, Q – 2, R – 4, S – 3