Ultrasonic Testing in Construction and Engineering
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Questions and Answers

What is the total distance traveled by ultrasound in echo-ranging if the speed of sound through seawater is v and the time interval between transmission and reception is t?

  • $2v \cdot t$ (correct)
  • $\frac{v}{t}$
  • $v + t$
  • $\frac{v}{2} \cdot t$

    • Why can't ordinary sound of longer wavelengths be used for echo-ranging purposes?

  • It travels too fast through seawater.
  • It gets absorbed by icebergs.
  • It reflects poorly from underwater hills.
  • It bends around corners and enters the detector. (correct)

    • What is echocardiography used for?

  • Reflecting ultrasonic waves from various parts of the heart. (correct)
  • Locating underwater hills.
  • Imaging the internal organs of the body.
  • Detecting abnormalities in the liver.

    • How do ultrasonic waves help in generating images of internal organs in ultrasonography?

    <p>By reflecting from regions where tissue density changes.</p> Signup and view all the answers

    What is the main functionality of an ultrasound scanner when imaging internal organs?

    <p>Displaying images of organs on a monitor or film.</p> Signup and view all the answers

    Why are ultrasonic waves preferred over ordinary sound for imaging internal organs?

    <p>They reflect from regions with tissue density changes.</p> Signup and view all the answers

    'Echocardiography' refers to the technique of:

    <p>Detecting abnormalities in the heart.</p> Signup and view all the answers

    'Ultrasound scanner' is primarily used for:

    <p>'Imaging' internal organs with ultrasonic waves.</p> Signup and view all the answers

    'Sonar technique' is commonly used for:

    <p>'Echo-locating' sunken ships.</p> Signup and view all the answers

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