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Mr. Dubey • 100.64K Points
Coach

Q. When testing a test piece with parallel front and back surfaces, no back wall echo can be obtained. Which of the following actions might enable you to obtain a back wall echo?

  • (A) Use a wetter transducer
  • (B) Use a lower frequency transducer
  • (C) Use a transducer with a narrower bandwidth
  • (D) Use a higher frequency transducer
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