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- Question 1 of 40
1. Question
The two basic types of acoustical lenses used are:
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2. Question
The best surface resolution can be obtained using a:
CorrectIncorrect - Question 3 of 40
3. Question
Two single transducers, one a transmitter and one a receiver, mounted in a common case but separated by a sound barrier are called:
CorrectIncorrect - Question 4 of 40
4. Question
Double transducer testing reduces the so called “dead zone” found near the front surface of a specimen.
CorrectIncorrect - Question 5 of 40
5. Question
The acoustical impedance of an ideal couplant:
CorrectIncorrect - Question 6 of 40
6. Question
Wetting agents are sometimes added to couplants to:
CorrectIncorrect - Question 7 of 40
7. Question
Standard reference blocks are used to:
CorrectIncorrect - Question 8 of 40
8. Question
The front-and-back-surface reflection signals are eliminated from the C-scan recording by:
CorrectIncorrect - Question 9 of 40
9. Question
The carriage (bridge) on an immersion testing tank provides for the _______________ and _____________ motion of the transducer.
CorrectIncorrect - Question 10 of 40
10. Question
The test method where both the transducer and the test specimen are placed in a tank filled with a liquid (water) is called:
CorrectIncorrect - Question 11 of 40
11. Question
The requirement that the transmitting and receiving transducers have to be precisely aligned on the test specimen is a disadvantage of:
CorrectIncorrect - Question 12 of 40
12. Question
Which of the following actors is an advantage of contact testing over immersion testing? (Choose two)
CorrectIncorrect - Question 13 of 40
13. Question
In contact testing, shear waves may be produced in a test specimen by:
CorrectIncorrect - Question 14 of 40
14. Question
The first critical incident angle for longitudinal waves is the point at which:
CorrectIncorrect - Question 15 of 40
15. Question
Plate waves may be used to test:
CorrectIncorrect - Question 16 of 40
16. Question
With reference to single-transducer pulse-echo testing, two-transducer pulse-echo testing has better:
CorrectIncorrect - Question 17 of 40
17. Question
Ultrasonic testing of castings is often not possible because of:
CorrectIncorrect - Question 18 of 40
18. Question
A general rule of thumb in determining the correct water distance to use in immersion testing is that the water distance should be:
CorrectIncorrect - Question 19 of 40
19. Question
In immersion testing, the transducer will be transmitting its sound beam perpendicular to the test surface when the following indication is received on the CRT:
CorrectIncorrect - Question 20 of 40
20. Question
During immersion testing, it is often necessary to angulate the transducer when a discontinuity is located to:
CorrectIncorrect - Question 21 of 40
21. Question
In immersion testing and with reference to straight-beam testing where no facilities exist for automatic scanning and recording, the angle-beam technique is generally the more rapid scanning technique to use.
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22. Question
An ultrasonic equipment operator should primarily look for indications appearing to the left of the back-surface reflection because:
CorrectIncorrect - Question 23 of 40
23. Question
The wave mode that has multiple or varying wave velocities is:
CorrectIncorrect - Question 24 of 40
24. Question
Which of the following would be considered application(s) of ultrasonic techniques?
CorrectIncorrect - Question 25 of 40
25. Question
The only significant sound wave mode that travels through a liquid is a:
CorrectIncorrect - Question 26 of 40
26. Question
The acoustic impedance of a material is used to determine the:
CorrectIncorrect - Question 27 of 40
27. Question
When angle beam contact testing a test piece, increasing the incident angle until the second critical angle is reached results in:
CorrectIncorrect - Question 28 of 40
28. Question
Acoustic energy propagates in different modes. Which of the following represent a mode?
CorrectIncorrect - Question 29 of 40
29. Question
It is possible for a discontinuity smaller than the transducer to produce indications of fluctuating amplitude as the transducer is moved laterally if testing is being performed in the:
CorrectIncorrect - Question 30 of 40
30. Question
In immersion testing, the near field effects of a transducer may be eliminated by:
CorrectIncorrect - Question 31 of 40
31. Question
In the far field of a uniform ultrasonic beam, sound intensity is ___________ the beam centerline.
CorrectIncorrect - Question 32 of 40
32. Question
Where does beam divergence occur?
CorrectIncorrect - Question 33 of 40
33. Question
As frequency increases in ultrasonic testing, the angle of beam divergence of a given diameter crystal:
CorrectIncorrect - Question 34 of 40
34. Question
What law can be used to calculate the angle of refraction within a metal for both longitudinal and shear waves?
CorrectIncorrect - Question 35 of 40
35. Question
At an interface between two different materials, an impedance difference results in:
CorrectIncorrect - Question 36 of 40
36. Question
In the immersion technique, the distance between the face of the transducer and the test surface (water path) is usually adjusted so that the time required to send the sound beam through the water:
CorrectIncorrect - Question 37 of 40
37. Question
On an A-scan display, the “dead zone,” refers to:
CorrectIncorrect - Question 38 of 40
38. Question
Of the following scan types, which one can be used to produce a recording of flaw areas superimposed over a plan view of the test piece?
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39. Question
A set of standard reference blocks with the same geometrical configuration and dimensions other than the size of the calibration reflectors, e.g., flat bottom holes, is called a set of:
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40. Question
The angle at which 90 degrees refraction of a longitudinal sound wave is reached is called:
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