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- Question 1 of 40
1. Question
The gate width control: (Choose two)
CorrectIncorrect - Question 2 of 40
2. Question
The alarm sensitivity control in a flaw-alarm / gating circuit:
CorrectIncorrect - Question 3 of 40
3. Question
The DAC (Distance Amplitude Correction) control adjusts the instrument sensitivity so that discontinuities of the same size will generate pips of the same height, regardless of the depth of the discontinuity in the specimen.
CorrectIncorrect - Question 4 of 40
4. Question
The test system which relies on reflected energy to find discontinuities is called:
CorrectIncorrect - Question 5 of 40
5. Question
The test system that uses either pulsed or continuous sound and indicates discontinuities as a reduction in received energy magnitude is called:
CorrectIncorrect - Question 6 of 40
6. 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 7 of 40
7. Question
In contact testing, shear waves may be produced in a test specimen by:
CorrectIncorrect - Question 8 of 40
8. Question
The first critical incident angle for longitudinal waves is the point at which:
CorrectIncorrect - Question 9 of 40
9. Question
Plate waves may be used to test:
CorrectIncorrect - Question 10 of 40
10. Question
Which of the following materials is most likely to produce the greatest amount of sound attenuation over a given distance?
CorrectIncorrect - Question 11 of 40
11. Question
A gross check of plate or sheet consists of marking off a grid pattern on the material, either real or imaginary, and then testing each grid square using:
CorrectIncorrect - Question 12 of 40
12. Question
The revolution indication found on a CRT screen when testing pipe represents
CorrectIncorrect - Question 13 of 40
13. Question
Generally, the best ultrasonic testing method for detecting discontinuities oriented along the fusion zero in a welded plate is:
CorrectIncorrect - Question 14 of 40
14. 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 15 of 40
15. 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 16 of 40
16. Question
During immersion testing, it is often necessary to angulate the transducer when a discontinuity is located to:
CorrectIncorrect - Question 17 of 40
17. Question
An unbonded condition can best be detected when the materials involved give a good coupling when bonded.
CorrectIncorrect - Question 18 of 40
18. Question
An ultrasonic equipment operator should primarily look for indications appearing to the left of the back-surface reflection because
CorrectIncorrect - Question 19 of 40
19. Question
An ultrasonic test instrument that displays pulses representing the amplitude of reflected sound as a function of time and distance is said to display:
CorrectIncorrect - Question 20 of 40
20. Question
The line of light that appears across the face of a CRT screen is called the: (Choose two)
CorrectIncorrect - Question 21 of 40
21. Question
The metal distance of a standard reference block is defined as the distance between the:
CorrectIncorrect - Question 22 of 40
22. Question
The Alcoa, Series A, area amplitude blocks have flat-bottomed holes:
CorrectIncorrect - Question 23 of 40
23. Question
The two basic types of acoustical lenses used are:
CorrectIncorrect - Question 24 of 40
24. Question
The best surface resolution can be obtained using a:
CorrectIncorrect - Question 25 of 40
25. 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 26 of 40
26. Question
Double transducer testing reduces the so called “dead zone” found near the front surface of a specimen.
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27. Question
The higher the frequency of a transducer, the:
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28. Question
Large diameter, single crystal transducers are generally:
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29. Question
Angle beam transducers are used to
CorrectIncorrect - Question 30 of 40
30. Question
Contact angle- beam transducers are generally identified by the:
CorrectIncorrect - Question 31 of 40
31. Question
The mode of vibration in steel that has the greatest sound velocity is the:
CorrectIncorrect - Question 32 of 40
32. Question
The A-scan displays information of a discontinuity’s depth and its:
CorrectIncorrect - Question 33 of 40
33. Question
The factor that determines the amount of reflection at the interface of two dissimilar materials is the:
CorrectIncorrect - Question 34 of 40
34. Question
Where might microshrinkage occur in a casting?
CorrectIncorrect - Question 35 of 40
35. Question
Greater beam spread occurs in search units with:
CorrectIncorrect - Question 36 of 40
36. Question
A standing wave in resonance testing is established by adjusting the :
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37. Question
Using the through transmission technique, the quality of an object is determined by the
CorrectIncorrect - Question 38 of 40
38. Question
Discontinuities in rolled product forms are most likely oriented:
CorrectIncorrect - Question 39 of 40
39. Question
The major difference between immersion and contact search units is their:
CorrectIncorrect - Question 40 of 40
40. Question
In immersion testing, the angle formed by the ultrasound beam and a line perpendicular to the component surface
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