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NDT ultrasonic level 1 Questions and Answers 2024/2025 $12.49   Add to cart

Exam (elaborations)

NDT ultrasonic level 1 Questions and Answers 2024/2025

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the velocity of longitudinal wave is determined by the  material properties the material in a search unit which controls the search unit ringing is called  the damping material which of the following search units would contain the thinnest crystal  the crystal vibrating at the highest...

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  • October 11, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NDT
  • NDT
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2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!


NDT ultrasonic level 1 Questions and
Answers 2024/2025
the velocity of longitudinal wave is determined by the

 material properties


the material in a search unit which controls the search unit ringing is called

 the damping material


which of the following search units would contain the thinnest crystal

 the crystal vibrating at the highest frequency


piezoelectric crystals convert

 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

 frequency


ultrasonic sound is defined as sound whose frequencies exceed


 20000 Hz


what is the formula for for solving for wavelength

 W=V/F



1|Page| GradeA+ | 2 0 0 2 5

, 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!

which instrument control is used to adjust signal height

 gain


if frequency is increased in a given material, wavelength will

 decrease


which instrument control alters the spacing between signals


 range


the indication on the oscilloscope screen which represents the far boundary of the material

being tested is called

 the back reflection


the piezoelectric material in a search unit or probe which vibrates to produce ultrasonic waves

is called


 a crystal


the ultrasonic testing of material where the search unit is in direct contact with the material

being tested is called

 straight beam contact testing
surface wave tesing

or angle beam testing




a test method employing two seperate search units(or probes) on opposite surfaces of the

material being tested is called


1|Page| GradeA+ | 2 0 0 2 5

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