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ASNT LEVEL III BASIC MATERIALS AND PROCESES EXAM LATEST
2025 ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED||
CH4 (MT). 21 - A star-shaped indication is seen on the cover
pass of a weld. What type of discontinuity is indicated? -
ANSWER-a. Crater crack
CH4 (MT). 22 - For maximum sensitivity in magnetic particle
inspection of rough welds: - ANSWER-d. the weld bead should be
ground to remove surface irregularities
CH4 (NR). 1 - The highest intensity sources of thermal neutrons
are: - ANSWER-c. nuclear fission reactors
CH4 (NR). 2 - Neutrons for fast-neutron radiography are not
obtainable from: - ANSWER-d. X-ray machines
CH4 (NR). 3 - A radioactive source used for neutron radiography
is: - ANSWER-a. Cf-252
,2|Page
CH4 (NR). 4 - The energy of the neutron is expressed in which of
the following units of measurement? - ANSWER-d. Electronvolts
CH4 (NR). 5 - A normally desirable feature of a thermal neutron
beam for neutron radiography is: - ANSWER-b. relatively low fast-
neutron intensity
CH4 (NR). 6 - Material that slows down neutrons is called: -
ANSWER-a. a moderator
CH4 (NR). 7 - The primary radiation mechanism for darkening
radiographic film when the direct neutron radiography process is
used with gadolinium screens is: - ANSWER-b. electrons
CH4 (NR). 8 - Neutron radiography using the transfer method
requires that the imaging screen must: - ANSWER-d. become
radioactive
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CH4 (NR). 9 - Which of the following neutron radiography
converter foils cannot be used for transfer or indirect radiography?
- ANSWER-c. Gadolinium
CH4 (NR). 10 - The most suitable films for producing neutron
radiographs are: - ANSWER-a. industrial X-ray films
CH4 (NR). 11 - Materials that are exposed to thermal neutron
beams: - ANSWER-d. may be radioactive after exposure to
neutrons has ceased
CH4 (NR). 12 - Lead is: - ANSWER-c. a relatively poor neutron
absorber
CH4 (NR). 13 - If 2 mm (0.08 in.) of plastic attenuates a thermal
neutron beam by a factor of 2, then 20 mm (0.8 in.) will attenuate
it by approximately a factor of: - ANSWER-d. 1000
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CH4 (NR). 14 - Materials in common usage for moderation of fast-
neutron sources include: - ANSWER-b. water, plastic, paraffin,
and graphite
CH4 (NR). 15 - The main reason for using neutron radiography in
place of X-radiography is: - ANSWER-c. the ability to image
objects and materials not possible with X-rays
CH4 (NR). 16 - A photographic record produced by the passage
of neutrons through a specimen onto a film is called: - ANSWER-
c. a radiograph
CH4 (NR). 17 - Many of the absorption differences between
neutrons and X-rays indicate that the two techniques: - ANSWER-
b. complement each other
CH4 (NR). 18 - The penetrating ability of a thermal neutron beam
is governed by: - ANSWER-a. attenuating characteristics of the
material being penetrated
ASNT LEVEL III BASIC MATERIALS AND PROCESES EXAM LATEST
2025 ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED||
CH4 (MT). 21 - A star-shaped indication is seen on the cover
pass of a weld. What type of discontinuity is indicated? -
ANSWER-a. Crater crack
CH4 (MT). 22 - For maximum sensitivity in magnetic particle
inspection of rough welds: - ANSWER-d. the weld bead should be
ground to remove surface irregularities
CH4 (NR). 1 - The highest intensity sources of thermal neutrons
are: - ANSWER-c. nuclear fission reactors
CH4 (NR). 2 - Neutrons for fast-neutron radiography are not
obtainable from: - ANSWER-d. X-ray machines
CH4 (NR). 3 - A radioactive source used for neutron radiography
is: - ANSWER-a. Cf-252
,2|Page
CH4 (NR). 4 - The energy of the neutron is expressed in which of
the following units of measurement? - ANSWER-d. Electronvolts
CH4 (NR). 5 - A normally desirable feature of a thermal neutron
beam for neutron radiography is: - ANSWER-b. relatively low fast-
neutron intensity
CH4 (NR). 6 - Material that slows down neutrons is called: -
ANSWER-a. a moderator
CH4 (NR). 7 - The primary radiation mechanism for darkening
radiographic film when the direct neutron radiography process is
used with gadolinium screens is: - ANSWER-b. electrons
CH4 (NR). 8 - Neutron radiography using the transfer method
requires that the imaging screen must: - ANSWER-d. become
radioactive
,3|Page
CH4 (NR). 9 - Which of the following neutron radiography
converter foils cannot be used for transfer or indirect radiography?
- ANSWER-c. Gadolinium
CH4 (NR). 10 - The most suitable films for producing neutron
radiographs are: - ANSWER-a. industrial X-ray films
CH4 (NR). 11 - Materials that are exposed to thermal neutron
beams: - ANSWER-d. may be radioactive after exposure to
neutrons has ceased
CH4 (NR). 12 - Lead is: - ANSWER-c. a relatively poor neutron
absorber
CH4 (NR). 13 - If 2 mm (0.08 in.) of plastic attenuates a thermal
neutron beam by a factor of 2, then 20 mm (0.8 in.) will attenuate
it by approximately a factor of: - ANSWER-d. 1000
, 4|Page
CH4 (NR). 14 - Materials in common usage for moderation of fast-
neutron sources include: - ANSWER-b. water, plastic, paraffin,
and graphite
CH4 (NR). 15 - The main reason for using neutron radiography in
place of X-radiography is: - ANSWER-c. the ability to image
objects and materials not possible with X-rays
CH4 (NR). 16 - A photographic record produced by the passage
of neutrons through a specimen onto a film is called: - ANSWER-
c. a radiograph
CH4 (NR). 17 - Many of the absorption differences between
neutrons and X-rays indicate that the two techniques: - ANSWER-
b. complement each other
CH4 (NR). 18 - The penetrating ability of a thermal neutron beam
is governed by: - ANSWER-a. attenuating characteristics of the
material being penetrated
