728x90 반응형 비파괴L322 QUIZ) ASNT L3 UT 11 201. A point, line or surface of a vibrating body marked by absolute or relative freedom from vibratory motion is referred to as A. a node B. a finger C. length D. depth 202. ultrasonic testing of castings usually requires A. high frequency transducers B. lower frequency transducers C. delay tip transducers D. transducer bubbler system 203. A notch type reference standard for tubing should be ma.. 2020. 6. 24. QUIZ) ASNT L3 UT 10 181. For a longitudinal immersion test, an automatic scanner is set to scan at 50cm/sec with a pulse repetition rate of 500 pulses per second and the water path is 25cm over an aluminum plate. Assuming an effective beam diameter of 0.220cm at the depth of the flaw, on the average how many effective interrogation would be made during one scan over a flaw equivalent to a flat-bottomed hole 0.0397c.. 2020. 6. 24. QUIZ) ASNT L3 UT 9 160. testing is usually accomplished by A. a crystal generating a face-shear type of energy B. angulation of the transducer above the first critical angle, but below second critical angle C. a transverse length expansion crystal D. a crystal with a thickness shear type of ~~~ 161. In the phased array technique, the effect produced when one transducer pulses: then after a brief delay a second tra.. 2020. 6. 24. QUIZ) ASNT L3 UT 8 141. velocity is A. a vector of phase propagation B. a vector representing angular phase preparation C. speed of propagation D. varying with grain size 142. Counter bores close to the weld can produce signals that may be interpreted as A. Back wall reflection of the base metal surface B. lamination in the base metal C. lack of fusion / penetration D. weld face reinforcement 143. When calibration.. 2020. 6. 24. QUIZ) ASNT L3 UT 7 121. An application appropriate for wall thichness measurement near surface A. focused angle probe B. standard single crystal probe C. TR probes D. high frequency vertical probe 122. Inspection of oil rings is prescribed in codes written by A. AWS B. ASTM C. ASME D. Nuclear Regulatory Committee 123. A circular disk flay much smaller than the wave length A. is likely to miss detection B. will ref.. 2020. 6. 24. QUIZ) ASNT L3 UT 5 81. An effective and commonly used technique for measuring the through wall depth of a discontinuity in tubular products is A. a narrow focus shear wave transducer/wedge combination B. a highly dampened pitch-catch shear wave transducer/wedge combination C. a tandom pitch-catch shear wave transducer/wedge combination D. a multi-mode transducer/wedge shear/longitudinal transducer/wedge combinatio.. 2020. 6. 24. QUIZ) ASNT L3 UT 4 61. A broad-based indication that tends to be consistent, as the search unit is moved along a contoured surface could indicate A. the porosity B. large grain structure C. an intermitent crack D. a false indication 62. Which of the methods listed below would give the best ultrasonic response to typics found in large rectangular aluminum or steel ingots? (at normal temperature) A. contact method u.. 2020. 6. 24. QUIZ) ASNT L3 UT 3 41. Regardless of the material property being sought, the ultrasonic determinations are A. velocity and attenuation B. attenuation vs scatter C. beam spread and velocity D. velocity and scatter 42. An A-scan or B-scan presentation in which an initial part of the time scale is not displayed if called A. distance amplitude correction B. initial pulse C. contact testing D. delayed sweep 43. When co.. 2020. 6. 24. QUIZ) ASNT L3 UT 2 21. In the below, how much surface distance from point B would be necessary to place the exit point of the transducer to obtain the 8/8 normal position at point B be using a 60 degree angle? A. 4.92" B. 5.92" C. 6.92" D. 7.02" 22. The best way to determine the weld centerline on installed piping with an inaccessible inside diameter (I.D), is to A. check the as-design drawings B. review the detai.. 2020. 6. 24. 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 다음 728x90 반응형