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Mr. Dubey • 100.64K Points
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Q. When inspecting a long bar with a longitudinal wave from one end, a series of additional echoes are seen immediately after the bottom surface reflection. these are most likely:

  • (A) Refracted shear and longitudinal waves caused by beam spread
  • (B) Flaw indications
  • (C) Multiples of the back surface reflection
  • (D) None of the above
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