1|Page
ET ASNT LEVEL I EXAM NEWEST 2025 ACTUAL
EXAM COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
I. A test specimen used as a basis for calibrating test cquipment
or as a comparison when evaluating test results is referred to as
a:
a. null-balancer
b. phase shifter .
C. reference standard
d. high pass filter - CORRECT ANSWER-.C. reference standard
In an eddy current testing situation, which of the following can
provide sources of noise?
a. instrumentation electronic circuits
b. nonspecific variations within the test object
c. electrical interference
d. all of the above - CORRECT ANSWER-.d. all of the above
,2|Page
3. The ratio of the response or amplitude from signals of interest
to the response or amplitude of indications that contain no useful
information for the test being conducted is referred to as:
a. Poisson's ratio
b. signal-to-noise ratio
c. the conductivity-to-permeability ratio
d. the reactance-to-resistance ratio - CORRECT ANSWER-b.
signal-to-noise ratio
4. IACS is a recognized abbreviation for:
a. Induced Alternating Current System
b. Inductively-Activated Comparison System
c. Internal Applied Current System
d. International Annealed Copper Standard - CORRECT
ANSWER-d. International Annealed Copper Standard
Which of the following is not a basic component of eddy current
equipment?
a. amplifier
b. coil
c. liquid couplant
,3|Page
d. detector - CORRECT ANSWER-c. liquid couplant
The process of comparing the reading or output of an
instrument, device, or dial with a standard to determine the
instrument's accuracy, capacity, or graduations is referred to as:
a. calibration
b. differentiation
c. integration
d. phase shifting - CORRECT ANSWER-a. calibration
When'conducting an eddy current test using a 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 - CORRECT
ANSWER-b. with the reference standard in one coil and an
acceptable test specimen in the other coil
, 4|Page
The impedance of an eddy current test coil will increase if the:
a. test frequency increases
b. inductive reactance of the coil decreases
c. inductance of the coil decreases
d. resistance of the coil decreases - CORRECT ANSWER-• a.
test frequency increases
Some of the products commonly tested using encircling coils
are:
a. rods, tubes, and wire
b. plate when volumetrically inspected
c. sheets and metalized foil
d. al of the above - CORRECT ANSWER-a. rods, tubes, and
wire
Which of the following would normally be considered the best
fill factor when testing straight tubing with an encircling or
feedthrough coil?
a. 0.95 (95%)
b. 1.75 (175%)
ET ASNT LEVEL I EXAM NEWEST 2025 ACTUAL
EXAM COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
I. A test specimen used as a basis for calibrating test cquipment
or as a comparison when evaluating test results is referred to as
a:
a. null-balancer
b. phase shifter .
C. reference standard
d. high pass filter - CORRECT ANSWER-.C. reference standard
In an eddy current testing situation, which of the following can
provide sources of noise?
a. instrumentation electronic circuits
b. nonspecific variations within the test object
c. electrical interference
d. all of the above - CORRECT ANSWER-.d. all of the above
,2|Page
3. The ratio of the response or amplitude from signals of interest
to the response or amplitude of indications that contain no useful
information for the test being conducted is referred to as:
a. Poisson's ratio
b. signal-to-noise ratio
c. the conductivity-to-permeability ratio
d. the reactance-to-resistance ratio - CORRECT ANSWER-b.
signal-to-noise ratio
4. IACS is a recognized abbreviation for:
a. Induced Alternating Current System
b. Inductively-Activated Comparison System
c. Internal Applied Current System
d. International Annealed Copper Standard - CORRECT
ANSWER-d. International Annealed Copper Standard
Which of the following is not a basic component of eddy current
equipment?
a. amplifier
b. coil
c. liquid couplant
,3|Page
d. detector - CORRECT ANSWER-c. liquid couplant
The process of comparing the reading or output of an
instrument, device, or dial with a standard to determine the
instrument's accuracy, capacity, or graduations is referred to as:
a. calibration
b. differentiation
c. integration
d. phase shifting - CORRECT ANSWER-a. calibration
When'conducting an eddy current test using a 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 - CORRECT
ANSWER-b. with the reference standard in one coil and an
acceptable test specimen in the other coil
, 4|Page
The impedance of an eddy current test coil will increase if the:
a. test frequency increases
b. inductive reactance of the coil decreases
c. inductance of the coil decreases
d. resistance of the coil decreases - CORRECT ANSWER-• a.
test frequency increases
Some of the products commonly tested using encircling coils
are:
a. rods, tubes, and wire
b. plate when volumetrically inspected
c. sheets and metalized foil
d. al of the above - CORRECT ANSWER-a. rods, tubes, and
wire
Which of the following would normally be considered the best
fill factor when testing straight tubing with an encircling or
feedthrough coil?
a. 0.95 (95%)
b. 1.75 (175%)
