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Metrology: Non - Destructive Techniques
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Metrology: Non - Destructive Techniques
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25 Questions

1. Which of the following compound is used for fine polishing?
2. Etching of specimen is done to achieve ___________
3. Which of the following types of rays is used in radiography for the inspection of castings?
4. There are no restrictions in the eddy current testing method; it can detect defects up to high depth in the castings.
5. What is the value of average number of grains in per square inch for ASTM 11?
6. Identify the type of destructive testing
7. Which of the following methods of inspection uses high frequency of sound waves for the detection of flaws in the castings?
8. Which test is used to determine dimensions of any object?
9. Which of the following terms changes in the eddy current testing method for the detection of defects in the castings?
10. Eddy current testing method can also be used for the evaluation of heat damage to the metal alloys.
11. In radiography, the penetration of rays is much easier with the less density of metal or casting.
12. In which type of test the capillary action principle is used?
13. Acoustic emission testing method is basically employed for the detection of surface discontinuities on the castings.
14. Which of the following non destructive testing is used to detect change in composition of any material?
15. In non-destructive testing, sound test used is a very fine and accurate method of detecting flaws in the castings.
16. Which test can be performed without skilled labour?
17. In penetrant testing of NDT, a liquid is penetrated into the cracks of metal by the application of pressure.
18. Impact test for detection of defects in the casting is the most crude and unreliable method of non-destructive testing.
19. Equipment used for inspection of inside portion of hollow chamber or narrow tube is known as ___________
20. Which of the following statements is/are true for ultrasonic test?
21. Non-destructive testing is used to determine
22. Which of the following property will be more in fine grained structure?
23. Eddy current test is used to detect
24. In ultrasonic inspection, a signal processing technique is used for the accurate indication of porosity in the castings.
25. Which of the following penetrating liquid is used in a liquid penetration test?

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