Electromagnetic Testing - Q&A 001.pdf

More documents

Recommendations

Info

85. In a feed through encircling coil eddy current system, a calibration standard maybe used to:A. Insure Repeatability And Reliability Of The SetupB. Precisely Calibrate The Flaw DepthC. Reduce Sensitivity To VibrationD. Measure The Test Frequency86. What causes phase shift in an eddy current test coil?A. A Change In The Ratio Of Inductive Reactance (XL) To Resistance {R}B. A Change In The Sensitivity Setting Of The InstrumentC. Use Of Modulation AnalysisD. None Of The Above87. In a feed through encircling coil flaw detection eddy current system, what would bethe purpose of running a calibration defect several times but in various positions (suchas top, bottom left and right)?A. To Check The Phase SelectivityB. To Ensure Proper Centering Of The Material In The Test CoilC. To Select The Modulation Analysis SettingD. To Select The Proper Operating SpeedCharlie Chong/ Fion Zhang
88. In a feed through encircling coil eddy current system, DC saturation wouldprobably be most helpful in testing:A. Copper Water TubingB. Titanium TubingC. Ferromagnetic Steel TubingD. Brass Rivet Wire89. In a feed through encircling coil eddy current system, the test frequency iscontrolled by the:A. OscilloscopeB. Sensitivity SettingC. OscillatorD. Modulation Analysis Setting90. Alloy variations in nonmagnetic material would most likely affect:A. PermeabilityB. ConductivityC. DiameterD. FrequencyCharlie Chong/ Fion Zhang
Page 1 and 2:
Electromagnetic TestingQuestions &
Page 3 and 4:
Petrochemical ApplicationsCharlie C
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
GreekAlphabetCharlie Chong/ Fion Zh
Page 13 and 14:
Charlie Chong/ Fion Zhang
Page 15 and 16:
Fion Zhang at Shanghai10th April 20
Page 17 and 18: My MangoesCharlie Chong/ Fion Zhang
Page 19 and 20: Keys:1. A test specimen used as a b
Page 21 and 22: Level I Q&ACharlie Chong/ Fion Zhan
Page 23 and 24: 1. A test specimen used as a basis
Page 25 and 26: 7. When conducting an eddy current
Page 27 and 28: FIGURE 8-45 Effect of test variable
Page 29 and 30: 13. The conductivity of a material
Page 31 and 32: 16. When testing plate with a probe
Page 33 and 34: 22. When testing tubing with an ins
Page 35 and 36: Eddy Current Bobbing CoilCharlie Ch
Page 37 and 38: 25. An increased in the impedance o
Page 39 and 40: 1. C 2. D 3. B 4. D 5. C 6. A 7. B
Page 41 and 42: 29. Eddy current test coils, which
Page 43 and 44: 35. Reference standards used for ed
Page 45 and 46: 38. Which of the following is not a
Page 47 and 48: 74. Material must be reasonably cen
Page 49 and 50: 47. All ferromagnetic materials tha
Page 51 and 52: Recalling the mistakesCharlie Chong
Page 53 and 54: 51. Which of the following is not a
Page 55 and 56: 57. Eddy current test techniques ca
Page 57 and 58: 63. When sorting a known mix of two
Page 59 and 60: 69. Nondestructive tests are common
Page 61 and 62: 74. Material must be reasonably cen
Page 65 and 66: 76. An eddy current system (60 cycl
Page 67: 82. A spinning probe eddy current i
Page 71 and 72: 94. A symbol commonly used to expre
Page 75 and 76: LessonLearnedCharlie Chong/ Fion Zh
Page 77 and 78: Eddy Current Testing Level I (20 Qu
Page 79 and 80: Q.4 Eddy currents generated in a te
Page 81 and 82: Q.10 A "spinning probe" would most
Page 83 and 84: Q.16 A hybrid coil is composed of t
Page 87 and 88: Level II Q&ATWOCharlie Chong/ Fion
Page 89 and 90: Level II - Q&A1. A 2. D 3. A 4. B 5
Page 91 and 92: High Pass Filter 高 “ 通 ”
Page 93 and 94: 7. The fill factor when a 13 mm (0.
Page 95 and 96: 13. A term used to define two or mo
Page 97 and 98: Residual Magnetism - Retentivity, R
Page 99 and 100: Rare Earth MagnetsThe permanent mag
Page 101 and 102: Charlie Chong/ Fion Zhang
Page 103 and 104: 19. The term used to define the val
Page 105 and 106: Self Inductance of a CoilInductance
Page 107 and 108: Note: Subsurface indication lag the
Page 109 and 110: In eddy current testing, what is im
Page 111 and 112: Phase lag is an important parameter
Page 113 and 114: 25. If the characteristic frequency
Page 115 and 116: Another inconvenience that arises d
Page 117 and 118: More Reading on Phase Analysis - Fl
Page 119 and 120:
Level II - Q&A1. A 2. D 3. A 4. B 5
Page 121 and 122:
Magnetic Domain - Hysteresis CurveC
Page 123:
31. The abscissa values on the impe
Page 127 and 128:
Figure 4Charlie Chong/ Fion Zhang
Page 129 and 130:
36. Which of the following would be
Page 131 and 132:
Page 133 and 134:
ωLo = E o , for ωL = E img , R =
Page 135 and 136:
41. A term used to define a system
Page 137 and 138:
47. The magnetizing force of an edd
Page 139 and 140:
Shielded and unshielded probesProbe
Page 141 and 142:
51. Which of the following is not a
Page 143 and 144:
RL CircuitCharlie Chong/ Fion Zhang
Page 145 and 146:
Oscillation in LC CircuitCharlie Ch
Page 147 and 148:
57. It is frequently possible to se
Page 149 and 150:
63. The ratio of the specific diame
Page 151 and 152:
69. A term used to define a propert
Page 153 and 154:
74. An eddy current test coil’s m
Page 155 and 156:
76. When a nonmagnetic rod is place
Page 157 and 158:
82. Which of the following material
Page 159 and 160:
84. The two voltages (V1 and V2) in
Page 161 and 162:
Page 163 and 164:
91. The impedance of a test coil us
Page 165 and 166:
94. When electrical current in an e
Page 167 and 168:
97. To be useful, limit frequency e
Page 169 and 170:
103. The actual frequencies used in
Page 171 and 172:
Page 173 and 174:
Level III - Q&A1. b 2. c 3. d 4. b
Page 175 and 176:
Q3. A calibration standard may be u
Page 177 and 178:
Page 179 and 180:
Q9. In eddy current testing of ferr
Page 181 and 182:
Q13. Lift-off certainly reduces the
Page 183 and 184:
17. When inspecting material with e
Page 185 and 186:
21. The reactance component is decr
Page 187 and 188:
22. Test coils may be shielded with
Page 189 and 190:
25. The test coil excitation curren
Page 191 and 192:
28. Which of the following is not a
Page 193 and 194:
31. An ac current produces eddy cur
Page 195 and 196:
33. Thin-walled tubes should be tes
Page 197 and 198:
35. Figure 13 indicates that the ma
Page 199 and 200:
37. An operating frequency of 100kH
Page 201 and 202:
40. Differential coil systems can b
Page 203 and 204:
43. In a test coil system, when the
Page 205 and 206:
46. In modulation analysis, the typ
Page 207 and 208:
49. In the ellipse method, the foll
Page 209 and 210:
51. In cathode ray tube ellipse tes
Page 211 and 212:
A dimension change will not noticab
Page 213 and 214:
52. Eddy current test instruments t
Page 215 and 216:
56. A primary-secondary coil inspec
Page 217 and 218:
59. A probe coil inspection system
Page 219 and 220:
63. A major limitation of modulatio
Page 221 and 222:
67. Impedance changes produced by s
Page 223 and 224:
71. Mutual inductance describes:a.
Page 225 and 226:
75. Referring to Figure 17, suppose
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Recalling the mistakesCharlie Chong
Page 235 and 236:
Flux Leakage Testing MethodCharlie
Page 237 and 238:
Level I - Standard Answers1. c 2. a
Page 239 and 240:
2. What will be the relative flux l
Page 241 and 242:
4. Flux leakage may occur at a surf
Page 243 and 244:
Rotational Transverse Magnetization
Page 245 and 246:
8. Using Figure FL-2, what is the v
Page 247 and 248:
9. In circular magnetization, the r
Page 249 and 250:
13. The curve shown in Figure FL-3
Page 251 and 252:
PermittivityIn electromagnetism, ab
Page 253 and 254:
17 The optimum angle at which the m
Page 255 and 256:
Page 257 and 258:
Level II - Standard Answers1. D 2.
Page 259 and 260:
3. The best flaw detection sensitiv
Page 261 and 262:
6. Using Figure FL-5, flux leakage
Page 263 and 264:
8. What particular type of defect i
Page 265 and 266:
Grain Boundary CrackCharlie Chong/
Page 267 and 268:
12. Due to the unique construction
Page 269 and 270:
16. The point (P) shown on the hyst
Page 271 and 272:
18. A calibration standard is prepa
Page 273 and 274:
22. In the examination of tubular p
Page 275 and 276:
24. Calibration standards used in t
Page 277 and 278:
Level III Q&A-Flux Leakage Testing
Page 279 and 280:
1. In flux leakage testing of wire
Page 281 and 282:
3. Which devices are used to detect
Page 283 and 284:
5. In a properly operating flux lea
Page 285 and 286:
7. Eddy current shielding, the name
Page 287 and 288:
9. A flux leakage pipe inspection s
Page 289 and 290:
12. Too high a rotational test spee
Page 291 and 292:
14. A tube is magnetized by passing
Page 293 and 294:
Circular Magnetic Fields Distributi
Page 295 and 296:
Circular Magnetic Fields Distributi
Page 297 and 298:
MFL of Wire Rope Principle• the a
Page 299 and 300:
A magnetic field is the magnetic ef
Page 301 and 302:
Gauss (Magnetic Flux Density)gauss,
Page 303 and 304:
Magnetic Permeability (B/H)In elect
Page 305 and 306:
19. A ferromagnetic part can be dem
Page 307 and 308:
20. Figure FL-14 shows an arrangeme
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Good LuckCharlie Chong/ Fion Zhang
show all

Electromagnetic Testing - Q&A 001.pdf

Create successful ePaper yourself

Delete template?

Save as template?