The GATE Grind

GATE 2023 MT – Question 24

Manufacturing Processes · Metal forming · 1 mark · Multiple choice

Match the defects with metal-forming techniques.

Column I:

P. Cold shut

Q. Zipper breaks

R. Stretcher strains

S. Center burst

Column II:

1. Rolling

2. Sheet metal forming

3. Drawing

4. Forging

  1. P – 4, Q – 1, R – 2, S – 3
  2. P – 4, Q – 2, R – 3, S – 1
  3. P – 1, Q – 4, R – 2, S – 3
  4. P – 3, Q – 1, R – 4, S – 2

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Show answer and explanation

Correct answer: (A) P – 4, Q – 1, R – 2, S – 3

Explanation

Cold shut is a forging lap/unjoined flow defect (P4); zipper breaks arise in rolling (Q1). Stretcher strains are sheet-forming marks from yield-point elongation (R2). Centre burst is internal cracking in drawing (S3).

Thus **A**.