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Exam (elaborations)

NDT ULTRASONIC LEVEL 1 EXAM

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  • NDT ULTRASONIC LEVEL 1

NDT ULTRASONIC LEVEL 1 EXAM...

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  • September 25, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
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  • NDT ULTRASONIC LEVEL 1
  • NDT ULTRASONIC LEVEL 1
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NDT ULTRASONIC LEVEL 1 EXAM

the velocity of the longitudinal wave is determined by the - ANSWER
material properties

the material in a search unit which controls the search unit ringing is
called - ANSWER the damping material

which of the following search units would contain the thinnest crystal -
ANSWER the crystal vibrating at the highest frequency

piezoelectric crystals convert - ANSWER electrical energy to mechanical
energy
or mechanical energy to electrical

the number of complete waves which pass a given point in a given time
period is referred to as the - ANSWER frequency

ultrasonic sound is defined as sound whose frequencies exceed -
ANSWER 20000 Hz

what is the formula for for solving for wavelength - ANSWER W=V/F

which instrument control is used to adjust signal height - ANSWER gain

if frequency is increased in a given material, wavelength will - ANSWER
decrease

which instrument control alters the spacing between signals - ANSWER
range

the indication on the oscilloscope screen which represents the far
boundary of the material being tested is called - ANSWER the back
reflection

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