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Casting Practice Test: Non Destructive Techniques
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Avg score: 82% Most missed: “Which of the following is not a source of production for gamma rays?”
Non Destructive Techniques topics include: Dye penetrant testing, magnaflux and eddy current testing, ultrasonic inspection and radiography. Here are some non-destructive casting techniques: Visual inspection: A non-destructive test that detects and examines surface flaws like surface cracks, discontinuities, and surface finish. It is an obligatory test for castings and welded joints. Liquid penetrant testing: A popular non-destructive test that detects defects in casting, forging, and welding during manufacturing and in-service. It is inexpensive, adaptable, and requires minimal... Show more
Casting Practice Test: Non Destructive Techniques
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25 Questions

1. What is the heat generated in eddy current operations?
2. Which of the following defects are not detected by magnetic particle inspection?
3. Which of the following defect is not detected by dye penetrant test?
4. In which of the following materials, ultrasonic testing cannot be used?
5. What is the size range of dry particle powder?
6. Only ultraviolet light is used in dye penetrant test.
7. What is the maximum frequency used in the ultrasonic inspection?
8. Which of the following can be a wavelength of gamma ray?
9. Which of the following is not a method of pre-cleaning?
10. Eddy current testing does not work below what thickness of materials?
11. What is the skin depth of copper at 60 Hz frequency?
12. For how long is a penetrant allowed to soak in cracks?
13. Which current is helpful in detecting sub surface discontinuities?
14. Eddy current inspection method cannot be detect which of the following defect?
15. X-rays are useful in detecting defects in casts up to what thickness?
16. What is the lower range of wavelength of the X-rays?
17. On what voltage do the X-rays operate?
18. Small drilled hole was a reference calibration in eddy current testing because it was produced in precise sizes.
19. The film produced by an X-ray is called as a radiograph.
20. When an AC current is used for magnaflux test, what is its frequency?
21. For measuring glue line thickness between aluminium sheets, what should the thickness of the sheet be?
22. Which of the following is not a type of penetrant application?
23. What should the diameter of a Cobalt-60 source used for producing gamma rays?
24. With an increase in the density of the material who does it affect the power loss in eddy current?
25. Ultrasonic testing is a portable process.