Electromagnetic Testing - ECT Q&A

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Q7 (d): Explanations 7. A surface crack in carbon steel plate during ET is sensed as a/an: a) increase in coupling. b) decrease in coupling. c) decrease in magnetic permeability. d) increase in resistance to current flow. (of the eddy current flow) Ponder: (d) Results in a apparent decrease in resistance on the impedance phase response diagram due to the decreasing eddy current flow. Charlie Chong/ Fion Zhang
Q8 (B): Explanation 8. Which is not a method used to gauge depth of a defect a) pattern recognition b) amplitude (standard answer) c) phase angle () d) none of the above are depth gauging methods Charlie Chong/ Fion Zhang
Page 1 and 2: Electromagnetic Testing - ECT Q&A 2
Page 3 and 4: Charlie Chong/ Fion Zhang
Page 7 and 8: 激发我更加的努力学
Page 11 and 12: 徐汇中学瑰丽激发我
Page 13 and 14: Fion Zhang at Nanjing 2014/December
Page 15 and 16: NRCan- Level I Examination: Charlie
Page 17 and 18: Q4. A term used to define a materia
Page 19 and 20: Q6. The alternating current require
Page 21 and 22: Level 1 E.M.C. Examination: Q1. Dis
Page 23 and 24: Q7. Which of the following eddy cur
Page 25 and 26: Answers 1. A 2. C 3. A 4. A 5. B 6.
Page 27 and 28: Level 2 General Examination: Q1. Wh
Page 29 and 30: Q6. To change radian units, often u
Page 31 and 32: Where: V L = the induced voltage in
Page 33 and 34: Faraday Law Charlie Chong/ Fion Zha
Page 35: Q5 (d): Explanation Charlie Chong/
Page 39 and 40: Phase lag is an important parameter
Page 41 and 42: (1/e) 1δ 2δ (1/e) 2 (1/e) 3 3δ F
Page 43 and 44: The phase lag angle is useful for e
Page 45 and 46: Phase lag β = x/δ radian δ = (π
Page 47 and 48: Level 2 E.M.C. Examination: Q1. In
Page 49 and 50: Q7. During measurement of conductiv
Page 51 and 52: Q1 (C - Silver): Explanations Metal
Page 53 and 54: Nickel silver (18%) 5.3 0.00014 150
Page 55 and 56: NRCan-Level III Examination: Charli
Page 57 and 58: Q3. To change radian units, often u
Page 59 and 60: Q7. If testing a material and you h
Page 61 and 62: Answers 1. B 2. D 3. C 4. B 5. C 6.
Page 63 and 64: 3. During measurement of conductivi
Page 65 and 66: 6. An eddy current probe with a 50
Page 67 and 68: 9. Crack detectors normally: a) are
Page 69 and 70: Discussion on the answer on Q6: 8.
Page 71 and 72: Answers 1. D 2. D 3. A 4. A 5. D 6.
Page 73 and 74: 3. The pickling time will be least
Page 75 and 76: 7. Suitable combinations of two dif
Page 77 and 78: 10. Fracture is a type of material
Page 79 and 80: 13. An advantage of using green san
Page 81 and 82: 18. Care must be taken not to splas
Page 83 and 84: 23. Optimum magnetic particle inspe
Page 85 and 86: Discussion on Q9: The correct answe
Page 87 and 88:
Discussion on Q11: The correct answ
Page 89 and 90:
Blast Furnace Charlie Chong/ Fion Z
Page 91 and 92:
Discussion on Q21: The correct answ
Page 93 and 94:
The given equation is easy to solve
Page 95 and 96:
Answers 1. B 2. C 3. C 4. D 5. B 6.
Page 97 and 98:
Che Guevara Charlie Chong/ Fion Zha
Page 99:
Good Luck! Charlie Chong/ Fion Zhan
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Electromagnetic Testing - ECT Q&A

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