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ASNT RT I EXAM NEWEST 2025 ACTUAL EXAM
COMPLETE 150 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
1. The indication on the instrument display that represents the
far boundary of material being tested is called: - ANSWER-the
back-surface reflection.
2. In immersion testing, the position of the transducer is often
varied by a manipulator to transmit sound into the test part at
various angles to the front surface. Such a procedure is referred
to as: - ANSWER-angulation.
3. The technical name for the cable that connects the ultrasonic
instrument to the transducer is: - ANSWER-coaxial cable
4. The process of standardizing an instrument or device by using
a reference standard is called: - ANSWER-calibration.
5. Another name for a compressional wave is: - ANSWER-
longitudinal wave.
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6. Another name for rayleigh waves is : - ANSWER-surface
waves.
7. A material used between the face of a transducer and the test
surface to permit or improve the transmission of ultrasonic
vibrations from the transducer to the material being tested is
called: - ANSWER-a couplant.
8. The piezoelectric material in a transducer that vibrates to
produce ultrasonic waves is called a - ANSWER-crystal.
9. Ultrasonic testing of material where the probe is in direct
contact with the material being tested may be: - ANSWER-
straight beam testing.
10. An advantage of using lithium sulfate in transducers is that
it: - ANSWER-is one of the most efficient receivers of ultrasonic
energy
12. The transducer that contains the thinnest piezoelectric crystal
is a: - ANSWER-25 MHz transducer
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13. Penetration of ultrasonic waves in a material is normally the
function of test frequency used. The greatest depth of
penetration is provided by a frequency of - ANSWER-1 MHz
14. The amount of beam divergence from a crystal is primarily
dependent on the - ANSWER-frequency and crystal size.
15. When an ultrasonic beam passes through the interface
between two dissimilar materials at an angle, a new angle of
sound travel takes place in the second material due to: -
ANSWER-refraction.
21. The velocity of longitudinal waves is approximately
__________ the velocity of shear waves in the same material. -
ANSWER-two times
27. Under most circumstances, which of the following
frequencies would result in the best resolving power? -
ANSWER-25 MHz
28. Which of the following materials of the same alloy is most
like ly to produce the greatest amount of sound attenuation over
a given distance? - ANSWER-A coarse-grained casting.
ASNT RT I EXAM NEWEST 2025 ACTUAL EXAM
COMPLETE 150 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
1. The indication on the instrument display that represents the
far boundary of material being tested is called: - ANSWER-the
back-surface reflection.
2. In immersion testing, the position of the transducer is often
varied by a manipulator to transmit sound into the test part at
various angles to the front surface. Such a procedure is referred
to as: - ANSWER-angulation.
3. The technical name for the cable that connects the ultrasonic
instrument to the transducer is: - ANSWER-coaxial cable
4. The process of standardizing an instrument or device by using
a reference standard is called: - ANSWER-calibration.
5. Another name for a compressional wave is: - ANSWER-
longitudinal wave.
,2|Page
6. Another name for rayleigh waves is : - ANSWER-surface
waves.
7. A material used between the face of a transducer and the test
surface to permit or improve the transmission of ultrasonic
vibrations from the transducer to the material being tested is
called: - ANSWER-a couplant.
8. The piezoelectric material in a transducer that vibrates to
produce ultrasonic waves is called a - ANSWER-crystal.
9. Ultrasonic testing of material where the probe is in direct
contact with the material being tested may be: - ANSWER-
straight beam testing.
10. An advantage of using lithium sulfate in transducers is that
it: - ANSWER-is one of the most efficient receivers of ultrasonic
energy
12. The transducer that contains the thinnest piezoelectric crystal
is a: - ANSWER-25 MHz transducer
, 3|Page
13. Penetration of ultrasonic waves in a material is normally the
function of test frequency used. The greatest depth of
penetration is provided by a frequency of - ANSWER-1 MHz
14. The amount of beam divergence from a crystal is primarily
dependent on the - ANSWER-frequency and crystal size.
15. When an ultrasonic beam passes through the interface
between two dissimilar materials at an angle, a new angle of
sound travel takes place in the second material due to: -
ANSWER-refraction.
21. The velocity of longitudinal waves is approximately
__________ the velocity of shear waves in the same material. -
ANSWER-two times
27. Under most circumstances, which of the following
frequencies would result in the best resolving power? -
ANSWER-25 MHz
28. Which of the following materials of the same alloy is most
like ly to produce the greatest amount of sound attenuation over
a given distance? - ANSWER-A coarse-grained casting.
