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- Question 1 of 40
1. Question
The ultrasonic testing technique in which finger damping is most effective in locating a discontinuity is the:
CorrectIncorrect - Question 2 of 40
2. 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 3 of 40
3. Question
A primary purpose of a reference standard is:
CorrectIncorrect - Question 4 of 40
4. Question
Compensation for the variation in echo height related to variations in discontinuity depth in the test material is known as:
CorrectIncorrect - Question 5 of 40
5. 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:
CorrectIncorrect - Question 6 of 40
6. Question
The angle at which 90 degrees refraction of a longitudinal sound wave is reached is called:
CorrectIncorrect - Question 7 of 40
7. 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 8 of 40
8. Question
The angular position of the reflecting surface of a planar discontinuity with respect to the entry surface is referred to as:
CorrectIncorrect - Question 9 of 40
9. Question
In ultrasonic testing, the time duration of the transmitted pulse is referred to as:
CorrectIncorrect - Question 10 of 40
10. Question
The phenomenon by which a wave strikes a boundary and changes the direction of its propagation within the same medium is referred to as:
CorrectIncorrect - Question 11 of 40
11. Question
In general, shear waves are more sensitive to small discontinuities than longitudinal waves for a given frequency and in a given material because:
CorrectIncorrect - Question 12 of 40
12. Question
In general, which of the following modes of vibration would have the greatest penetrating power in a coarse-grained material if the frequency of the waves are the same?
CorrectIncorrect - Question 13 of 40
13. Question
The formula sin θ1/V1 = sin θ2/V2 is referred to as:
CorrectIncorrect - Question 14 of 40
14. Question
The angle of reflection of an ultrasonic beam at an aluminum-water interface is:
CorrectIncorrect - Question 15 of 40
15. Question
What kind of waves travel at a velocity slightly less than shear waves and their mode of propagation is both longitudinal and transverse with respect to the surface?
CorrectIncorrect - Question 16 of 40
16. Question
Properties of shear or transverse waves used for ultrasonic testing include:
CorrectIncorrect - Question 17 of 40
17. Question
One of the most common applications of ultrasonic tests employing shear waves is for the:
CorrectIncorrect - Question 18 of 40
18. Question
Significant errors in ultrasonic thickness measurement can occur if:
CorrectIncorrect - Question 19 of 40
19. Question
The instrument displays a plan view of the part outline and defects when using:
CorrectIncorrect - Question 20 of 40
20. Question
The incident angles at which 90 degrees refraction of longitudinal and shear waves occurs are called:
CorrectIncorrect - Question 21 of 40
21. Question
The refraction angle of longitudinal ultrasonic waves passing from water into a metallic material at angles other than normal to the interface is primarily a function of:
CorrectIncorrect - Question 22 of 40
22. Question
As frequency increases in ultrasonic testing, the angle of beam divergence of a given diameter crystal:
CorrectIncorrect - Question 23 of 40
23. 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 24 of 40
24. Question
A hole produced during the solidification of metal due to escaping gases is called:
CorrectIncorrect - Question 25 of 40
25. Question
The factor that determines the amount of reflection at the interface of two dissimilar materials is:
CorrectIncorrect - Question 26 of 40
26. Question
A quartz crystal cut so that its major faces are parallel to the Z and Y axes and perpendicular to the X axis is called
CorrectIncorrect - Question 27 of 40
27. Question
The equation describing wavelength in terms of velocity and frequency is:
CorrectIncorrect - Question 28 of 40
28. Question
Of the piezoelectric materials listed below, the most efficient sound transmitter is:
CorrectIncorrect - Question 29 of 40
29. Question
The formula used to determine the angle of beam divergence of a quartz crystal is:
CorrectIncorrect - Question 30 of 40
30. Question
The resolving power of a transducer is directly proportional to its:
CorrectIncorrect - Question 31 of 40
31. Question
Acoustic lens elements with which of the following permit focusing the sound energy to enter cylindrical surfaces normally or along a line focus?
CorrectIncorrect - Question 32 of 40
32. Question
When using two separate transducers (one a transmitter, the other a receiver), the most efficient combination would be a:
CorrectIncorrect - Question 33 of 40
33. Question
In immersion testing, the accessory equipment to which the search cable and the transducer are attached is called a:
CorrectIncorrect - Question 34 of 40
34. Question
In general, discontinuities in wrought products tend to be oriented:
CorrectIncorrect - Question 35 of 40
35. Question
In contact testing, defects near the entry surface cannot always be detected because of:
CorrectIncorrect - Question 36 of 40
36. Question
Rayleigh waves:
CorrectIncorrect - Question 37 of 40
37. Question
. Reducing the extent of the dead zone of a transducer by using a delay tip results in:
CorrectIncorrect - Question 38 of 40
38. Question
The technique of examining an ultrasonic reflector from different directions might be used to enable the technician to:
CorrectIncorrect - Question 39 of 40
39. Question
In immersion testing, the angle formed by the ultrasound beam and a line perpendicular to the component surface:
CorrectIncorrect - Question 40 of 40
40. Question
A major limitation of using a low test frequency is:
CorrectIncorrect