📊 Non Destructive Testing and Evaluation
Q. According to AST M E709-95 and API, after removing magnetization of parts after examination, the residual magnetism shall not exceed (1 gauss = 0.0001 tesla):
  • (A) 3 × 10-4T (3gauss)
  • (B) 4 × 10-4T (4 gauss)
  • (C) 6 × 10-4T (6gauss)
  • (D) 8 × 10-4T (8 gauss)
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✅ Correct Answer: (A) 3 × 10-4T (3gauss)

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