728x90 반응형 NDT L332 QUIZ) ASNT L3 BASIC 9 161. When this flow of eddy currents very within a material the indication across the test coil will a. remain unchanged b. change as the flow of eddy currents change c. completely disappear 162. The test coil ’s magnetic field will a. not pass through carbon steels b. not pass through nonconductive coatings c. pass through nonconductive coatings 163. Certifications in accordance with SNT-TC-1A .. 2020. 7. 9. QUIZ) ASNT L3 BASIC 8 141. An excessively long emulsification time might result in a. false indications b. shallow discontinuity indications being lost c. excessive background fluorscence d. loss of indication of tight cracks 142. Water washable liquid penetrants differ from post-emulsifiable liquid penetrants in that they a. can only be used on non-ferrous parts b. have an oily base c. must be removed with a solvent.. 2020. 7. 9. QUIZ) ASNT L3 BASIC 7 121. to determine amperage for longitudinal magnetization of a steel bar divide the constant value(45,000) by the a. L/D ratio of the bar b. L/D ratio lines the number of coil turns 122. The strength of the magnetic leakage field from a discontinuity is affected by the a. length of the discontinulty b. size of the contact area c. amperage used during magnetization d. depth of the discontinuity 1.. 2020. 7. 9. QUIZ) ASNT L3 BASIC 5 81. The line of force that form a path around a crack in a ring magnet are called a. magnetic lines b. leakage flux c. field strength d. longitudinal field 82. A magnetic discontinuity which is break in the magnetic uniformity of a part is related to a sudden change in a. inductance b. resistivity c. capacitance d. permeability 83. The most effective MT method for inspection of a large casting i.. 2020. 7. 8. QUIZ) ASNT L3 BASIC 4 61. with which of the following is the term "rockwell" associates? a. index of metal machinability b. tensile testing c. strain gauges d. indentation hardness testing 62. metal fatigue is most likely to be found in structures a. loaded under constant high stress b. having undergone a substantial overload c. subject to cyclic vibratory or stress reversal loads d. loaded in constant tension 63. In.. 2020. 7. 8. QUIZ) ASNT L3 BASIC 3 41. The velocity of sound in steel a. is greater frequency increase b. is lower than the velocity of sound in water c. changes if mode conversion occurs d. is dependent of the reflection factor 42. In an acoustic emission test, the sensor has a resonant frequency of 150 KHz and the speed of sound is measured as 3000m/s. The wavelength at the sensor frequency is a. 0.05mm b. 20mm c. 20M d. 450M 4.. 2020. 7. 8. QUIZ) ASNT L3 MT 4 61. Which of the following would be most applicable for the detection of sub-surface flaws in a high permeability welded structure? A. Wet fluorescent-AC B. Dry visible-FWDC C. Dry visible-HWDC D. Wet fluorescent-DC 62. Which of the statements below are not typically employed to prevent or minimize prod marks on parts A. Use padded prods B. Reduce prod spacing and magnetizing current C. Make sur.. 2020. 6. 26. QUIZ) ASNT L3 MT 3 41. The bulk indicator is designed and normally used for an assessment of magnetic leakage fields as a practical check on the external demagnetization state of an object. The indicators commonly used for checking external field levels after a magnetic particle test normally have a range of about 1 to 2mT (10 to 20 Gauss). Positive and negative readings represent which pole? A. Positive readings .. 2020. 6. 26. QUIZ) ASNT L3 MT 2 21. When establishing a magnetic particle procedure for a part to be used in a specific application, there are many parameters that should be included in the procedure. Of the items listed below, which one has no appreciable effect on the inspection results? A. Type of magnetic particles B. Type and amount of applied current C. Direction of magnetizing field D. Reference to applicable standards .. 2020. 6. 26. QUIZ) ASNT L3 PT 2 2. Which of the following is not an effective method for removing grease from the surface of a part to be penetrant tested? A. Alkaline cleaner B. vapor degreasing C. hot water rinse D. cleaning with solvent-type material ANSWER : C 3. The best test for production monitoring of the penetrant process is the A. ceramic block test B. cracked Ni-Cr panel test C. cracked AI block test D. cracked AI-C.. 2020. 6. 10. 이전 1 2 3 4 다음 728x90 반응형