Metallurgical Engineering > GATE 2026 > Non-Destructive Testing
Match the descriptions listed in Column I with the corresponding non-destructive testing methods listed in Column II:
| Column I | Column II |
|---|---|
| (P) Internal flaws in railroad wheel | (1) Ultrasonic |
| (Q) In-service monitoring of crack | (2) Radiography |
| (R) Inclusion in mild steel | (3) Dye Penetrant |
| (S) Surface crack in Al-based alloy | (4) Acoustic Emission |
Correct : a
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