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ASNT ULTRASONIC LEVEL I EXAM NEWEST
2025/2026 ACTUAL EXAM COMPLETE 170
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
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: angulation.
The technical name for the cable that connects the ultrasonic
instrument to the transducer is: conduit.
The process of standardizing an instrument or device by using a
reference standard is called: calibration.
Another name for a compressional wave is:
longitudinal wave
Another name for Rayleigh waves is: surface
waves
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: couplant
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The piezoelectric material in a transducer that vibrates to produce
ultrasonic waves is called a:
crystal
Ultrasonic testing of material where the probe is in direct contact
with the material being tested may be:
straight beam testing
An advantage of using lithium sulfate in transducers is that it:
is one of the most efficient receivers of ultrasonic energy.
The transducer shown in figure 1 is used for: straight
beam testing
The transducer that contains the thinnest piezoelectric crystal is:
a: 1 MHz b:
5 MHz c:
15 MHz d:
25 MHz
25mhz
The amount of beam divergence from a crystal is primarily
dependent on the:
frequency and crystal size
,3 | Page
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 a: 1 MHz b: 2.25 MHz
c: 5 MHz d:
10 Mhz
1 Mhz
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: refraction
In figure 3, indication D represents the:
A: first discontinuity indication
B: first back surface reflection
C: second front surface indication D:
second discontinuity indication first
back surface reflection
In figure 3, the distance between indications A and B represents
the:
Water distance from the transducer to the block
Under most circumstances, which of the following frequencies
would result in the best resolving power?
1 MHz
, 4 | Page
5 MHz
10 MHz
25 MHz
25 MHz
Which of the following materials of the same alloy is most likely
to produce the greatest amount of sound attenuation over a given
distance?
A hand forging.
A coarse grained casting.
An extrusion.
The attenuation is equal in all materials.
A coarse grained casting
In contact testing, the entry surface indication is sometimes
referred to as the:
initial pulse
An ultrasonic instrument display pattern containing a large
number of low level indications (often referred to as grass or
hash) could be caused by:
A: a crack
B: a large inclusion
ASNT ULTRASONIC LEVEL I EXAM NEWEST
2025/2026 ACTUAL EXAM COMPLETE 170
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
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: angulation.
The technical name for the cable that connects the ultrasonic
instrument to the transducer is: conduit.
The process of standardizing an instrument or device by using a
reference standard is called: calibration.
Another name for a compressional wave is:
longitudinal wave
Another name for Rayleigh waves is: surface
waves
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: couplant
,2 | Page
The piezoelectric material in a transducer that vibrates to produce
ultrasonic waves is called a:
crystal
Ultrasonic testing of material where the probe is in direct contact
with the material being tested may be:
straight beam testing
An advantage of using lithium sulfate in transducers is that it:
is one of the most efficient receivers of ultrasonic energy.
The transducer shown in figure 1 is used for: straight
beam testing
The transducer that contains the thinnest piezoelectric crystal is:
a: 1 MHz b:
5 MHz c:
15 MHz d:
25 MHz
25mhz
The amount of beam divergence from a crystal is primarily
dependent on the:
frequency and crystal size
,3 | Page
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 a: 1 MHz b: 2.25 MHz
c: 5 MHz d:
10 Mhz
1 Mhz
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: refraction
In figure 3, indication D represents the:
A: first discontinuity indication
B: first back surface reflection
C: second front surface indication D:
second discontinuity indication first
back surface reflection
In figure 3, the distance between indications A and B represents
the:
Water distance from the transducer to the block
Under most circumstances, which of the following frequencies
would result in the best resolving power?
1 MHz
, 4 | Page
5 MHz
10 MHz
25 MHz
25 MHz
Which of the following materials of the same alloy is most likely
to produce the greatest amount of sound attenuation over a given
distance?
A hand forging.
A coarse grained casting.
An extrusion.
The attenuation is equal in all materials.
A coarse grained casting
In contact testing, the entry surface indication is sometimes
referred to as the:
initial pulse
An ultrasonic instrument display pattern containing a large
number of low level indications (often referred to as grass or
hash) could be caused by:
A: a crack
B: a large inclusion
