728x90 반응형 NDT27 QUIZ) ASNT L3 BASIC 2 21. Weld spatter is caused by (spatter -> undercut) a. arc blow, excessive current, wet electrodes b. arc blow, excessive current, alternating current c. low-hydrogen filler, reduced travel speed d. low magnetic retention excessive current, wet electrodes 22. In the making of seamless or electric resistance welded (ERW) pipe or tubing the discontinuities are oriented a. transverse to the pipe or.. 2020. 7. 23. QUIZ) ASNT L3 PT 1 1. Application of a lipohilic emulsifier is accomplished by A. A nozzle that provides a coarse spray B. A nozzle that provides a fine, pressure spray C. Dipping the part into an open tank D. By brushing the emulsifier on to the part with a coarse spray 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.. 2020. 7. 22. QUIZ) ASNT L3 MT 5 81. The coercive force the magnetic material whose hystersis loop is shown in figure.4 is given by the A. amplitude of flux density B at point 8 B. amplitude of flux density B at point E C. product of B and H at point B D. negative value of H at point C 82. On the initial magnetization curve the maximum permeability of the magnetic material is achivevd A. at the point of maximum slope on curve o.. 2020. 7. 21. QUIZ) ASNT L3 RT 1 1. An unacceptable flaw has been identified in a 3/4 inch thick plate. Concerning stereoradiography Which of the following is true? A. A single radiograph is exposed using two radiation source positioned parallel to the film B. The relationship between the two required exposures is equal to the papillary C. The movement of the source between flaw height (distance from part surface) is exponentia.. 2020. 7. 21. QUIZ) ASNT L3 UT 1 1. Which of the following is not basic information available through ultrasonic examination A. The location of the discontinuity in the weld cross section can be estimated B. The orientation, and to some degree, the shape of the discontinuity can be determined by comparing signal size when tested from different directions C. The returned signal amplitude is a measure of the height of the discont.. 2020. 7. 21. BASIC differences between SNT-TC-1A, CP-189 (비교)6 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 UT 13 241. Rough surfaces cause the echo amplitude from discontinuities with in the part to a. increase b. decrease c. not change d. change frequency 242. When a sound beam travels from a liquid Into a metal through a contoured surface the sound team inside the metal will a. have the phase velocities of the first symmetrical and asymmetrical modes b. have the Phase velocity of the incident longitudina.. 2020. 6. 24. 이전 1 2 3 다음 728x90 반응형
