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Chapter:

70+ Magnetic Particle Testing Level 2 Solved MCQs

in Non Destructive Testing and Evaluation

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .

Chapters

Chapter: Magnetic Particle Testing Level 2
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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