The GATE Grind

GATE 2026 MT – Question 38

Manufacturing Processes · Metal forming · 2 marks · Multiple choice

Match the defects in Column I with the corresponding metal-manufacturing processes in Column II.

Column I:

(P) Edge cracking

(Q) Flashline cracking

(R) Chevron cracking

(S) Cracked core

Column II:

(1) Casting

(2) Forging

(3) Rolling

(4) Extrusion

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

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: (D) P-3, Q-2, R-4, S-1

Explanation

Rolling can produce edge cracks due to restricted lateral flow and edge tensile stresses. Forging develops flashline cracks at the flash region. Extrusion can develop internal chevron or centre-burst cracks. A cracked sand core is a casting defect. The resulting match is **P3,Q2,R4,S1, D**.