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- Question 1 of 40
1. Question
In immersion testing using the angle-beam technique, the specimen front-surface indication will be
CorrectIncorrect - Question 2 of 40
2. Question
When testing a spot weld with a sound beam that is the same size as the weld nugget, the CRT pattern from a good spot weld will show:
CorrectIncorrect - Question 3 of 40
3. 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 4 of 40
4. Question
When using the formula a = w (sin α) to determine a discontinuity’s physical location, the transducer wedge sound travel distance must be first determined before any calculations can be made as to discontinuity location.
CorrectIncorrect - Question 5 of 40
5. Question
Direct reading ultrasonic calculators can be used to locate discontinuities in plate when:
CorrectIncorrect - Question 6 of 40
6. Question
Which of the following materials is most likely to produce the greatest amount of sound attenuation over a given distance?
CorrectIncorrect - Question 7 of 40
7. Question
A gross check of plate or sheet consists of marking off a grid pattern on the material, either real or imaginary, and then using each grid square using:
CorrectIncorrect - Question 8 of 40
8. Question
In contact testing, shear waves may be produced in a test specimen by:
CorrectIncorrect - Question 9 of 40
9. Question
The first critical incident angle for longitudinal waves is the point at which
CorrectIncorrect - Question 10 of 40
10. Question
Loss of back-surface reflection is evidence that sound is not being returned to the:
CorrectIncorrect - Question 11 of 40
11. Question
An ultrasonic instrument operator can control the number of cycles of sound energy transmitted into a test specimen by adjusting pulse length. A short pulse length results in: (Choose two)
CorrectIncorrect - Question 12 of 40
12. Question
The acoustical impedance of an ideal couplant
CorrectIncorrect - Question 13 of 40
13. Question
Wetting agents are sometimes added to couplants to:
CorrectIncorrect - Question 14 of 40
14. Question
Large diameter, single crystal transducers are generally:
CorrectIncorrect - Question 15 of 40
15. Question
Angle-beam transducers are used to:
CorrectIncorrect - Question 16 of 40
16. Question
Skip distance will increase with:
CorrectIncorrect - Question 17 of 40
17. Question
Wave propagation in a material as the result of sound absorption and scattering is known as:
CorrectIncorrect - Question 18 of 40
18. Question
The velocity of shear waves is:
CorrectIncorrect - Question 19 of 40
19. Question
A major limitation of using a low test frequency is:
CorrectIncorrect - Question 20 of 40
20. Question
The length of the region near the face of the search unit where the intensity fluctuates depends on the:
CorrectIncorrect - Question 21 of 40
21. Question
The most commonly used method of producing shear waves in a test part when inspecting by the immersion method is:
CorrectIncorrect - Question 22 of 40
22. Question
The type of display that never shows the entrance surface reflections is:
CorrectIncorrect - Question 23 of 40
23. Question
The ultrasonic testing technique that uses two search units is the
CorrectIncorrect - Question 24 of 40
24. Question
Low frequency sound waves are not generally used to test thin materials because of
CorrectIncorrect - Question 25 of 40
25. Question
When using two separate transducers (one a transmitter, the other a receiver), the most efficient combination would be a:
CorrectIncorrect - Question 26 of 40
26. Question
In immersion testing, the accessory equipment to which the search cable and the transducer are attached is called a:
CorrectIncorrect - Question 27 of 40
27. Question
In general, discontinuities in wrought products tend to be oriented
CorrectIncorrect - Question 28 of 40
28. Question
The formula used to determine the angle of beam divergence of a quartz crystal is:
CorrectIncorrect - Question 29 of 40
29. Question
The resolving power of a transducer is directly proportional to its:
CorrectIncorrect - Question 30 of 40
30. Question
Thin sheet may be inspected with the ultrasonic wave directed normal to the surface by observing:
CorrectIncorrect - Question 31 of 40
31. Question
A diagram in which the entire circuit stage or sections are shown by geometric figures and the path of the signal or energy by lines and/or arrows is called a:
CorrectIncorrect - Question 32 of 40
32. Question
. A hole produced during the solidification of metal due to escaping gases is called:
CorrectIncorrect - Question 33 of 40
33. Question
Properties of shear or transverse waves used for ultrasonic testing include:
CorrectIncorrect - Question 34 of 40
34. Question
One of the most common applications of ultrasonic tests employing shear waves is for the:
CorrectIncorrect - Question 35 of 40
35. Question
. Significant errors in ultrasonic thickness measurement can occur if:
CorrectIncorrect - Question 36 of 40
36. Question
A testing technique in which the crystal or transducer is parallel to the test surface and ultrasonic waves enter the material being tested in a direction perpendicular to the test surface is:
CorrectIncorrect - Question 37 of 40
37. Question
The distance from a given point on an ultrasonic wave to the next corresponding point is referred to as:
CorrectIncorrect - Question 38 of 40
38. Question
The angle formed by an ultrasonic wave as it enters a medium of different velocity than the one from which it came and a line drawn perpendicular to the interface between the two media is called the angle of:
CorrectIncorrect - Question 39 of 40
39. Question
A primary purpose of a reference standard is:
CorrectIncorrect - Question 40 of 40
40. Question
. In an immersion test of a piece of steel or aluminum, the water distance appears on the display as a fairly wide space between the initial pulse and the front surface reflection of:
CorrectIncorrect