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These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
Chapters
51. |
According to ASTM E709-95 when fluorescent particles are used, the bulb shall be warmed up prior to use for at least: |
A. | 1 min |
B. | 2 min |
C. | 3 min |
D. | 4 min |
Answer» D. 4 min |
52. |
According to ASTM E709-95 with prod technique, the prods shall be tipped if the open circuit voltage is over: |
A. | 10 V |
B. | 15 V |
C. | 20 V |
D. | 25 V |
Answer» D. 25 V |
53. |
According to ASME Section VIII, a linear indication is defined as an indication in which the length is equal to or greater than the width by a factor of: |
A. | 1 |
B. | 2 |
C. | 3 |
D. | 4 |
Answer» C. 3 |
54. |
According to ASTM E709-95 the viscosity limit (measured in centi Stokes) of the wet medium (conditioned water) should not exceed: |
A. | 1 cSt |
B. | 3 cSt |
C. | 6 cSt |
D. | 4 cSt |
Answer» C. 6 cSt |
55. |
According to ASTM E709-95 when applying fluorescent magnetic particles technique, the operator shall be in darkness area at least......................prior to examination: |
A. | 2 min |
B. | 3 min |
C. | 4 min |
D. | 5 min |
Answer» B. 3 min |
56. |
According to ASTM E709-95 the alkalinity of conditioned water shall not exceed: |
A. | 10.0 pH |
B. | 10.5 pH |
C. | 11.0 pH |
D. | 11.5 pH |
Answer» B. 10.5 pH |
57. |
According to ASTM E709-95, with wet continuous magnetization technique, the duration of magnetization current is of the order of: |
A. | 0.5 sec |
B. | 1.0 sec |
C. | 1.5 sec |
D. | 2.0 sec |
Answer» A. 0.5 sec |
58. |
According to ASTM E709-95 in using prods having a spacing of 19 mm (3/4 inches) and above, the magnetizing current shall be: |
A. | From 90 to 110 A/25 mm (1 inch) |
B. | From 100 to 125 A/25 mm (1 inch) |
C. | From 90 to 120 A/ 25 mm (1 inch) |
D. | From 100 to 200 A/25 mm (1 inch) |
Answer» B. From 100 to 125 A/25 mm (1 inch) |
59. |
According to ASTM E709-95 powder shall be applied upon the part to be tested in such a manner that: |
A. | A light uniform coating is formed |
B. | In excess coating |
C. | All of the above |
D. | None of the above |
Answer» A. A light uniform coating is formed |
60. |
According to ASTM E709-95 before turning off current and examination, dry powder in excess shall be: |
A. | Removed by a dry-air current |
B. | Kept in place |
C. | All of the above |
D. | None of the above |
Answer» D. None of the above |
61. |
According to ASTM E709-95 demagnetization can be performed by: |
A. | Decreasing alternating current |
B. | Reversing direct current |
C. | All of the above |
D. | None of the above |
Answer» C. All of the above |
62. |
According to ASTM E709-95, Table 3., alternating current electromagnetic yokes must have a lifting force of at least: |
A. | 3.0 kg (7 lb) |
B. | 3.5 kg (8 lb) |
C. | 4.0 kg (9 lb) |
D. | 4.5 kg (10 lb) |
Answer» D. 4.5 kg (10 lb) |
63. |
According to ASTM E709-95, Table 3., direct current electromagnetic yokes must have a lifting force of at least: |
A. | 15 kg (33 lb) |
B. | 16 kg (36 lb) |
C. | 17 kg (38 lb) |
D. | 18 kg (40 lb) |
Answer» D. 18 kg (40 lb) |
64. |
According to API, the acceptable particle concentration of wet particle solution for fluorescent particles is: |
A. | 0.1 to 0.4 mL by volume |
B. | 0.1 to 0.5 mL by volume |
C. | 0.1 to 0.6 mL by volume |
D. | 0.1 to 0.7 mL by volume |
Answer» A. 0.1 to 0.4 mL by volume |
65. |
According to API, the particle concentration of wet particle solution must be checked: |
A. | Prior to each shift |
B. | Only after each shift |
C. | Only each week |
D. | Only each two weeks |
Answer» A. Prior to each shift |
66. |
According to ASTM E709-95 and API, the UV intensity measured at a minimum of 38 cm (15 inches) at least shall not be less than: |
A. | 700 µW/cm2 |
B. | 800 µW/cm2 |
C. | 900 µW/cm2 |
D. | 1000 µW/cm2 |
Answer» D. 1000 µW/cm2 |
67. |
According to ASTME 709-95 and API, in order to eliminate all contaminants, an appropriate cleaning shall be performed on all the surfaces to be examined and on a minimum of adjacent material: |
A. | 25.4 mm (1 inch) |
B. | 31.7 mm (5/4 inches) |
C. | 38.1 mm (1.5 inches) |
D. | 44.5 mm (7/4 inches) |
Answer» A. 25.4 mm (1 inch) |
68. |
According to ASTM E709-95 and API, the temperature of the dry particles can be usable up to: |
A. | 38ºC |
B. | 2000ºC |
C. | 49ºC |
D. | 315ºC |
Answer» D. 315ºC |
69. |
According to ASTM E709-95 and API, the thickness of non conductive coatings will not exceed: |
A. | 1-10 mm |
B. | 2-5 mm |
C. | 0.02-0.05 mm |
D. | 0.001-0.004 mm |
Answer» C. 0.02-0.05 mm |
70. |
According to ASTM E709-95 and API, relevant indications are produced by: |
A. | Greasy surfaces |
B. | Excessive background |
C. | Leakage fields |
D. | Rotating Eddy currents |
Answer» C. Leakage fields |
71. |
According to ASTM E709-95 and API, when fluorescent particles are used, the UV bulb shall warm up prior to use for at least: |
A. | 1 minute |
B. | 2 minutes |
C. | 3 minutes |
D. | 5 minutes |
Answer» D. 5 minutes |
72. |
According to AST M E709-95 and API, after removing magnetization of parts after examination, the residual magnetism shall not exceed (1 gauss = 0.0001 tesla): |
A. | 3 × 10-4T (3gauss) |
B. | 4 × 10-4T (4 gauss) |
C. | 6 × 10-4T (6gauss) |
D. | 8 × 10-4T (8 gauss) |
Answer» A. 3 × 10-4T (3gauss) |
73. |
According to ASTM E709-95 and API, a linear indication is defined as an indication in which the length is equal to or greater than the width by a factor of: |
A. | 1 |
B. | 2 |
C. | 3 |
D. | 4 |
Answer» C. 3 |
74. |
According to API, a non- relevant indication is defined as an indication which in the major dimension is equal to, or less than: |
A. | 1.59 mm (1/16 inches) |
B. | 2.4 mm (3/32 inches) |
C. | 3.2 mm (1/18 inches) |
D. | 4 mm (5/32 inches) |
Answer» A. 1.59 mm (1/16 inches) |
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