5/9/25, 10:42 PM Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam Questions with Verified Answers, Detailed Rationales, and 100% Accur…
Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam
Questions with Verified Answers, Detailed Rationales, and
100% Accuracy – Guaranteed Pass | Graded A+
When'conducting an eddy b. with the reference standard in one coil and an
current test using a acceptable test specimen in the other coil
differential comparison coil
arrangement that
compares an external
reference standard with the
test specimen, the system
should be nulled or
balanced:
a. with only the reference
standard in one coil
b. with the reference
standard in one coil and
an acceptable test
specimen in the other coil
c. with the reference
standard in one coil and an
unacceptable test
specimen in the other coil
d. with only the test specimen
in one coil
-a… 1/35
,5/9/25, 10:42 PM Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam Questions with Verified Answers, Detailed Rationales, and 100% Accur…
Which of the following b. a small inclusion in the center of the rod
conditions would be the
most difficult to detect
when eddy current testing
a rod with an encircling
coil?
a. a deep surface crack that
has a depth of 30% of the
rod diameter
b. a small inclusion in the
center of the rod
c. a 5% change in diameter
d. a 10% change in conductivity
When testing tubing with an .d. flow around the inside diameter of the tubing
inside
diameter coil, most of the
eddy currents:
a. flow in a longitudinal
direction down the tubing
b. flow radially in the tube
c. flow around only the
outside diameter of the
tubing
d. flow around the inside
diameter of the tubing
Which of the following -а. 100 Hz
test frequencies would
produce eddy currents
with the largest depth of
penetration?
а. 100 Hz
b. 10 kHz
с. 1 МНz
d. 10 MHz
-a… 2/35
,5/9/25, 10:42 PM Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam Questions with Verified Answers, Detailed Rationales, and 100% Accur…
An eddy current test coil's C. impedance
opposition to the flow of
alternating current is
called:
a. resistance
b. inductive reactance
c. impedance
d. capacitive reactance
An increase in the impedance • b. cause a decrease in the current flow through the test coil
of an eddy current test coil
will:
a. cause an increase in the
current flow through the
test coil
b. cause a decrease in the
current flow through the
test coil
C. not affect current flow in
the test coil
d. decrease the voltage
applied to the coil
Which of the following will d. all of the above
affect the impedance an
encircling eddy current test
probe?
a. conductivity of a test
specimen in the coil
b. permeability of a test
specimen in the coil
c. fill factor
d. all of the above
When a test coil consists of a B. Secondary winding
double
winding arrangement, and one
winding is referred to as a
primary winding, the other
wonding is referred to as:
A. Absolute winding
B. Secondary winding
C. Phase winding
-a… 3/35
, 5/9/25, 10:42 PM Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam Questions with Verified Answers, Detailed Rationales, and 100% Accur…
D. None if the above
Eddy current test coils which c. changes in conductivity
are wound to form a wide coil
would normally be used to
detect:
a. pitting
b. small inclusions
c. changes in conductivity
d. porosity
Eddy current test coils, which d. small surface defects
are wound to form a narrow
coil, would normally be
used to detect:
a. slow changes in dimensions
b. gradual changes in
conductivity
c. variation in heat treatment
d. small surface defects
Direct current saturation coils a. steel
would most likely be used
when testing:
a. steel
b. aluminum
c. copper
d. brass
-a… 4/35
Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam
Questions with Verified Answers, Detailed Rationales, and
100% Accuracy – Guaranteed Pass | Graded A+
When'conducting an eddy b. with the reference standard in one coil and an
current test using a acceptable test specimen in the other coil
differential comparison coil
arrangement that
compares an external
reference standard with the
test specimen, the system
should be nulled or
balanced:
a. with only the reference
standard in one coil
b. with the reference
standard in one coil and
an acceptable test
specimen in the other coil
c. with the reference
standard in one coil and an
unacceptable test
specimen in the other coil
d. with only the test specimen
in one coil
-a… 1/35
,5/9/25, 10:42 PM Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam Questions with Verified Answers, Detailed Rationales, and 100% Accur…
Which of the following b. a small inclusion in the center of the rod
conditions would be the
most difficult to detect
when eddy current testing
a rod with an encircling
coil?
a. a deep surface crack that
has a depth of 30% of the
rod diameter
b. a small inclusion in the
center of the rod
c. a 5% change in diameter
d. a 10% change in conductivity
When testing tubing with an .d. flow around the inside diameter of the tubing
inside
diameter coil, most of the
eddy currents:
a. flow in a longitudinal
direction down the tubing
b. flow radially in the tube
c. flow around only the
outside diameter of the
tubing
d. flow around the inside
diameter of the tubing
Which of the following -а. 100 Hz
test frequencies would
produce eddy currents
with the largest depth of
penetration?
а. 100 Hz
b. 10 kHz
с. 1 МНz
d. 10 MHz
-a… 2/35
,5/9/25, 10:42 PM Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam Questions with Verified Answers, Detailed Rationales, and 100% Accur…
An eddy current test coil's C. impedance
opposition to the flow of
alternating current is
called:
a. resistance
b. inductive reactance
c. impedance
d. capacitive reactance
An increase in the impedance • b. cause a decrease in the current flow through the test coil
of an eddy current test coil
will:
a. cause an increase in the
current flow through the
test coil
b. cause a decrease in the
current flow through the
test coil
C. not affect current flow in
the test coil
d. decrease the voltage
applied to the coil
Which of the following will d. all of the above
affect the impedance an
encircling eddy current test
probe?
a. conductivity of a test
specimen in the coil
b. permeability of a test
specimen in the coil
c. fill factor
d. all of the above
When a test coil consists of a B. Secondary winding
double
winding arrangement, and one
winding is referred to as a
primary winding, the other
wonding is referred to as:
A. Absolute winding
B. Secondary winding
C. Phase winding
-a… 3/35
, 5/9/25, 10:42 PM Updated 2025 ET ASNT Level 1 Study Guide: Actual Exam Questions with Verified Answers, Detailed Rationales, and 100% Accur…
D. None if the above
Eddy current test coils which c. changes in conductivity
are wound to form a wide coil
would normally be used to
detect:
a. pitting
b. small inclusions
c. changes in conductivity
d. porosity
Eddy current test coils, which d. small surface defects
are wound to form a narrow
coil, would normally be
used to detect:
a. slow changes in dimensions
b. gradual changes in
conductivity
c. variation in heat treatment
d. small surface defects
Direct current saturation coils a. steel
would most likely be used
when testing:
a. steel
b. aluminum
c. copper
d. brass
-a… 4/35
