Take A Free ASNT NDT ET Level 2 Exam Practice Test – Quiz Course

by

Here you can take a free ASNT NDT ET Level 2 Exam Practice Test with the latest Eddy Current Testing Method Level II Questions and Answers.

1.

A term used to describe the effect observed due to a change in the electromagnetic coupling between a test specimen and a probe coil when the distance of separation between them is varied is:

 
 
 
 

2.

When testing by the eddy current method, discontinuities will be most easily detected when the eddy currents are:

 
 
 
 

3.

In order to decrease the effect on conductivity readings due to variations in test part thickness:

 
 
 
 

4.

Which of the following methods may be used to improve the signal-to-noise ratio of an eddy current test system?

 
 
 
 

5.

A method of minimizing the effect of indications caused by gradual dimensional changes while retaining the indications caused by discontinuities is to:

 
 
 
 

6.

A term used to define the phenomenon where, at very high frequencies, the eddy current flow is restricted to an extremely thin outer layer of the conductor is:

 
 
 
 

7.

The fill factor when a 13 mm (0.5 in.) diameter bar is inserted in a 25 mm (1 in.) diameter coil is:

 
 
 
 

8.

The term used to define the difference between actual instrument output and expected output as defined by a straight-line calibration curve is:

 
 
 
 

9.

Which of the following could be used to suppress unwanted high-frequency harmonics?

 
 
 
 

10.

The impedance change of an eddy current test coil due to a change in test part characteristics can be most easily analyzed as a combined change in:

 
 
 
 

11.

The inductive reactance of a test coil can be calculated using the formula:

 
 
 
 

12.

When conducting an eddy current test, variations in the test material can be detected as variations in the:

 
 
 
 

13.

A term used to define two or more coils electrically connected in opposition such that any electromagnetic condition which is not common to both a test specimen and a reference specimen will produce an unbalance. the system is:

 
 
 
 

14.

Tubing is generally inspected using the:

 
 
 
 

15.

When testing small parts in an eddy current encircling coil for permeability measurements, which of the following test parameters may be considered important?

 
 
 
 

16.

In a test coil consisting of both a primary and secondary winding, the voltage across the secondary is a function of:

 
 
 
 

17.

Eddy current testing relies on the principle of:

 
 
 
 

18.

When the H field strength around a material is increased and then decreased to zero, the induction field B within the part does not return to zero. The term defines this B value when H has returned to zero as:

 
 
 
 

19.

The term used to define the value of the H field required to decrease the remanence of material to zero is:

 
 
 
 

20.

The three major specimen parameters that influence eddy current testing is:

 
 
 
 

21.

Doubling the number of turns on a coil will:

 
 
 
 

22.

The frequency ratio, f/fg, can be defined as:

 
 
 
 

23.

When testing tubing, using an encircling (OD) coil, what is the phase relationship of the output signals from identical ID and OD discontinuities?

 
 
 
 

24.

A term used to define an instrumentation technique that discriminates between variables in the test part by the different phase angle changes which these conditions produced in the test signal are:

 
 
 
 

25.

If the characteristic frequency (fg) of a material is 125 Hz, the test frequency required to give an f/fg ratio of 10 would be:

 
 
 
 

26.

A term used to define any change in a sinusoidal signal, when the output is not a linear reproduction of the input, is:

 
 
 
 

27.

At a fixed test frequency, which of the following materials will the eddy current penetration be greatest?

 
 
 
 

28.

The heating effect in magnetic materials caused by the work required to rotate magnetic domains can be eliminated by:

 
 
 
 

29.

If the test frequency increases while the field strength is held constant, the surface eddy current density:

 
 
 
 

30.

As the fill factor decreases, the impedance variation of a pickup coil produced by a given change in conductivity

 
 
 
 

31.

The abscissa values on the impedance plane are shown in Figure 2 is given in terms of:

Figure-2.png

 
 
 
 

32.

In Figure 2 (an impedance diagram for a solid non-magnetic rod), the fg or characteristic frequency is calculated by the formula:

Figure-2.png

 
 
 
 

33.

In Figure 2, a change in the f/fg ratio will result in:
Figure-2.png

 
 
 
 

34.

In Figure 3, the solid curves are plots for different values of:
Figure-3.png

 
 
 
 

35.

Figure 4 illustrates the fact that eddy current responses:
Figure-4.png

 
 
 
 

36.

Which of the following would be easier to detect in the tubing by the eddy current method using the self-comparison differential coil arrangement?

 
 
 
 

37.

The magnetic domains in an unmagnetized ferromagnetic material are:

 
 
 
 

38.

When a magnetic material is placed in a region of an applied magnetizing force (H), a magnetic field (B) is developed in the material by means of:

 
 
 
 

39.

Figure 5 illustrates the fact that the limit frequency, fg equations and impedance diagrams for long solid rods and long thin-walled tubing are:
Figure-5.png

 
 
 
 

40.

To eliminate any dependence upon the number of turns of a test coil, the inductance values of an impedance diagram are:

 
 
 
 

41.

A term used to define a system that indicates only the magnitude of variations in the total coil impedance regardless of the phase or direction in which it occurs on an impedance plane is:

 
 
 
 

42.

When eddy current testing tubing with a system that includes a frequency-discriminating circuit, which of the following variables would be classified as a high-frequency variable?

 
 
 
 

43.

A major problem associated with the eddy current test method is the:

 
 
 
 

44.

The atoms of a metal showing magnetic characteristics are grouped into regions that are the smallest known permanent magnets. These regions are called:

 
 
 
 

45.

When a coil’s magnetizing force is applied to a ferromagnetic material, the flux density in the material is:

 
 
 
 

46.

The flux density in a magnetic material is usually designated by the:

 
 
 
 

47.

The magnetizing force of an eddy current test coil is usually designated by the:

 
 
 
 

48.

In eddy current testing, the specimen is coupled to the test coil by:

 
 
 
 

49.

The thickness of nonconductive coatings on a conductive base can be most simply measured by:

 
 
 
 

50.

Which of the following is not a factor that affects the inductance of an eddy current test coil?

 
 
 
 

51.

The use of magnetic shielding around the exciting coil will generally:

 
 
 
 

52.

The formula used to calculate the impedance of an eddy current test coil is:

The-formula-used-to-calculate-the-impedance-of-an-eddy-current-test-coil-is.png

 
 
 
 

53.

An out-of-phase condition between current and voltage:

 
 
 
 

54.

A term used to define a surface coil mounted so that the coil can be rotated about the circumference of a test specimen is:

 
 
 
 

55.

A term used to define an eddy current test coil that uses magnetic material to purposely shape the magnetic field is:

 
 
 
 

56.

The vector-point, ellipse, and linear time-base methods are all subdivisions of the:

 
 
 
 

57.

It is frequently possible to separate the conductivity variable from the permeability and dimensional variables when using:

 
 
 
 

58.

When eddy current testing by the ellipse method, the normal indication when the test specimen and reference standard are the same is approximate:

 
 
 
 

59.

When eddy current testing by the ellipse method, one variable may be indicated by the angle of the ellipse or straight line while another variable may be indicated by the:

 
 
 
 

60.

When eddy current testing by the linear time-base is applied to the vertical method, deflection plates of a cathode ray tube when the test specimen and reference standard are the same and the balance controls are properly adjusted.

 
 
 
 

61.

When eddy current testing by the linear time-based method, what is applied to the vertical deflection plates of a cathode ray tube when a condition of unbalance exists between the test specimen and the reference standard?

 
 
 
 

62.

The conductivity value for a metal is a function of the:

 
 
 
 

63.

The ratio of the specific diameter of a probe to the minimum discontinuity of interest should be:

 
 
 
 

64.

Which of the following materials would be more likely used as a mounting material for a probe coil?

 
 
 
 

65.

A term used to define a surface or internal rupture that is attributed to the processing at too low a temperature or excessive working or metal movement during the forging, rolling, or extruding operation is:

 
 
 
 

66.

A term used to define the timing relationships involved in alternating current signals is:

 
 
 
 

67.

When eddy current testing a nonferrous material, the choice of test frequency is determined by the:

 
 
 
 

68.

When testing ferrous materials, a small but detectable portion of the magnetic flux in the material will pass outside the metal when a surface discontinuity is encountered. This flux is called:

 
 
 
 

69.

A term to define a property of a test system that enables the separation of signals due to discontinuities in the test specimen that are located in close proximity to each other is:

 
 
 
 

70.

A term used to define a material having a permeability less than that of a vacuum is:

 
 
 
 

71.

The inductive reactance of a coil is measured in units of:

 
 
 
 

72.

Which of the following coil arrangements would eliminate or decrease the effects of minor variations in diameter, chemical composition, hardness, etc., which occur gradually along the length of a wire?

 
 
 
 

73.

Which of the following conditions are not important when selecting specimens to be used as reference standards?

 
 
 
 

74.

An eddy current test coil’s magnetic field intensity in the air:

 
 
 
 

75.

The circuits which make it possible to minimize the effect of signals caused by variables of no interest on the readout mechanism are based on differences in:

 
 
 
 

76.

When a nonmagnetic rod is placed inside an eddy current test coil:

 
 
 
 

77.

The symbol commonly used to signify impedance is:

 
 
 
 

78.

A decrease in conductivity is equivalent to:

 
 
 
 

79.

If the conductivity of a test part in an eddy current test coil decrease, the magnitude of the eddy currents at a given depth in the test specimen:

 
 
 
 

80.

When the voltage applied to a circuit and the current through the circuit both reach their maximums and minimums at the same time, the voltage and current are:

 
 
 
 

81.

Which of the following is not a commonly used eddy current testing readout mechanism?

 
 
 
 

82.

Which of the following materials would have the highest resistivity value?

 
 
 
 

83.

The two voltages (V1 and V2) shown in Figure 6 are:
Figure-6.png

 
 
 
 

84.

The two voltages (V1 and V2) in Figure 7 are:
Figure-7.png

 
 
 
 

85.

In Figure 8, H represents:
Figure-8.png

 
 
 
 

86.

In Figure 8, B represents:
Figure-8.png

 
 
 
 

87.

In Figure 8, the distance represented by A is a measure of the materials:
Figure-8.png

 
 
 
 

88.

In Figure 8, the distance represented by C is a measure of the materials:

Figure-8.png

 
 
 
 

89.

The ratio of a material’s flux density to a test coil’s magnetizing force, (B/H), can be used to determine the materials:

 
 
 
 

90.

The magnetic field generated by eddy currents induced in a test specimen:

 
 
 
 

91.

The impedance of a test coil usually can be represented by the vector sum of:

 
 
 
 

92.

For age hard enable aluminum and titanium alloys, changes in hardness are indicated by changes in the:

 
 
 
 

93.

The penetration of eddy currents in a conductive material is decreased when:

 
 
 
 

94.

When the electrical current in an eddy current coil reverses direction:

 
 
 
 

95.

When testing magnetic materials in an ac field, increasing the field strength:

 
 
 
 

96.

Impedance diagrams have been mathematically derived and experimentally verified for materials of any conductivity and permeability having rectangular, cylindrical, or spherical symmetry. To test all specimens of similar geometry under the same condition, it is only necessary to choose a test frequency, f, so that the frequency ratio f/fg lies at the same point on the impedance diagram for each specimen. This principle is based upon:

 
 
 
 

97.

To be useful, limit frequency equations must be:

 
 
 
 

98.

When a rod is placed in an encircling type of coil, the density of eddy currents will be the greatest:

 
 
 
 

99.

The term fill factor applies to:

 
 
 
 

100.

An eddy current system using handling equipment with the automatic marking of the defective areas primarily makes it possible to:

 
 
 
 

101.

Two test coils are often used in a bridge circuit to:

 
 
 
 

102.

In inspecting ferromagnetic materials, relatively low- frequencies are normally used because of the:

 
 
 
 

103.

The actual frequencies used in any specific eddy current inspection should be selected on the basis of the:

 
 
 
 
 

104.

In modulation analysis testing, which of the following would not modulate the test frequency applied to the test coil?

 
 
 
 

Question 1 of 104

Are You Looking for a Free ASNT NDT ET Level 2 Exam Practice Test?

Free ASNT NDT ET Level 2 Exam Practice Test
Take A Free ASNT NDT ET Level 2 Exam Practice Test – Quiz Course

 

Free ASNT NDT ET Level 2 Exam Practice Test 2026 – Eddy Current Testing Questions and Answers

Take a Free ASNT NDT ET Level II Practice Test with Eddy Current Testing (ECT) Questions, Answers, and Exam Preparation Guidance.

Are you preparing for an ASNT NDT ET Level 2 examination, employer-based Eddy Current Testing Level II certification, or an Electromagnetic Testing qualification assessment?

Welcome to UpWeld! Here you can practice important Eddy Current Testing Level II multiple-choice questions (MCQs) covering electromagnetic theory, inspection equipment, test procedures, signal interpretation, and practical NDT applications.

Our free online quiz is designed to help NDT technicians, inspection professionals, and certification candidates improve their understanding of Electromagnetic Testing (ET).

With this practice test, you can:

  • Practice ET Level II multiple-choice questions online.

  • Review Eddy Current Testing principles and applications.

  • Improve your understanding of inspection techniques and instrumentation.

  • Prepare for theoretical and employer-specific qualification examinations.

  • Identify weak areas and improve technical knowledge.

  • Revise important calculations, formulas, and inspection concepts.

Start the Free ASNT ET Level 2 Practice Test below and check how well you understand Eddy Current Testing.

What Is ASNT NDT ET Level II – Electromagnetic Testing?

Electromagnetic Testing (ET) is a nondestructive testing method used to examine materials by evaluating their interaction with electromagnetic fields.

Eddy Current Testing (ECT), one of the most widely used ET techniques, uses electromagnetic induction to detect changes in conductive materials without damaging the inspected component.

Eddy current methods are commonly used for:

  • Detecting surface and near-surface cracks.

  • Inspecting heat exchanger and condenser tubing.

  • Evaluating conductive material properties.

  • Measuring electrical conductivity.

  • Assessing coating thickness under suitable conditions.

  • Detecting corrosion and material degradation.

  • Inspecting aircraft components, fastener holes, and industrial equipment.

An ET Level II technician may be qualified to set up inspection equipment, conduct examinations, interpret results, evaluate indications against applicable criteria, and prepare inspection reports within the scope of their certification.

ET Level II Certification Information for 2026

ET Level II qualification is commonly managed through an employer-based certification program using an approved written practice.

Important qualification references may include:

  • ASNT Recommended Practice No. SNT-TC-1A: Guidance for employer-based NDT personnel qualification and certification.

  • ANSI/ASNT CP-189: Requirements for qualification and certification of NDT personnel when adopted by the employer or governing contract.

  • ANSI/ASNT CP-105: Standard topical outlines for NDT personnel qualification.

  • NAS 410: NDT personnel qualification requirements used in relevant aerospace applications.

Candidates should verify the applicable standard, training hours, documented experience, examination requirements, and practical assessment requirements with their employer or certification authority.

Note: This is an independent training and practice quiz. It is not an official ASNT examination or certification.

ASNT ET Level 2 Practice Test – Topics Covered

Our Eddy Current Testing Level II practice material focuses on fundamental theory, technical calculations, instrumentation, and inspection applications.

1. Principles of Electromagnetic Testing

Review electromagnetic induction, Faraday’s law, Lenz’s law, magnetic fields, induced currents, electrical conductivity, magnetic permeability, impedance, and phase relationships.

2. Eddy Current Test Coil Arrangements

Understand absolute coils, differential coils, encircling coils, surface probes, internal bobbin probes, and the effects of coil positioning on signal response.

3. Test Coil Design and Performance

Study coil inductance, resistance, impedance, fill factor, lift-off, coil geometry, and the relationship between probe design and flaw-detection sensitivity.

4. Effects of Test Materials on Eddy Current Signals

Learn how conductivity, magnetic permeability, thickness, surface condition, geometry, temperature, and discontinuities influence eddy current responses.

5. Selection of Eddy Current Test Frequency

Review frequency selection, standard depth of penetration, skin effect, phase separation, defect sensitivity, and the relationship between frequency and inspection depth.

6. Eddy Current Instrument Systems

Study oscillators, amplifiers, filters, phase-sensitive detection, impedance-plane displays, calibration reference standards, and signal-to-noise ratio improvement.

7. Eddy Current Testing Applications

Practice questions related to surface crack detection, aerospace inspection, tubing examination, heat exchanger inspection, sorting of conductive materials, and conductivity measurement.

8. Alternating Current Field Measurement (ACFM)

Understand the basic operating principles of ACFM, surface-breaking crack detection, signal interpretation, and selected industrial applications.

9. Remote Field Testing (RFT)

Review remote field inspection principles, through-wall assessment of suitable ferromagnetic tubing, probe arrangements, and inspection limitations.

10. Electromagnetic Testing Procedures and Standards

Understand equipment verification, calibration, reference standards, inspection procedures, reporting, acceptance criteria, safety, and quality control.

The exact examination syllabus depends on the employer’s written practice, the applicable standard, and the ET techniques for which the candidate is being qualified.

Important Eddy Current Testing Formulas for Level II Preparation

Candidates should understand how to apply basic electromagnetic testing formulas, including:

1. Inductive Reactance

Xₗ = 2πfL

Where:

  • Xₗ = Inductive reactance in ohms

  • f = Frequency in hertz

  • L = Inductance in henries

2. Standard Depth of Penetration

δ = 1 / √(πfμσ)

Where:

  • δ = Standard depth of penetration in metres

  • f = Test frequency in hertz

  • μ = Magnetic permeability in henries per metre

  • σ = Electrical conductivity in siemens per metre

This standard expression assumes a suitable homogeneous conducting material and sinusoidal excitation.

3. Coil Fill Factor

For a round solid test object within a circular encircling coil:

Fill Factor = (Test Object Diameter / Coil Inside Diameter)²

Understanding these formulas can help candidates answer numerical questions involving penetration depth, coil performance, material properties, and inspection frequency.

Take the Free ASNT NDT ET Level 2 Practice Test Online

Now test your understanding of Electromagnetic Testing.

Instructions for the Practice Quiz:

  1. Read each multiple-choice question carefully.

  2. Select the most appropriate answer.

  3. Complete the questions without referring to study materials where possible.

  4. Submit the quiz using the controls provided.

  5. Review your results and any available answer explanations.

  6. Revisit the topics where you answered incorrectly.

Our objective is to help you understand the principles behind the correct answers rather than simply memorize questions.

How to Prepare for an ET Level II Qualification Exam in 2026

Successful preparation requires a combination of theoretical knowledge, practical inspection experience, and familiarity with applicable industry procedures.

Step 1: Study electromagnetic testing fundamentals. Understand alternating current, electromagnetic induction, coil behavior, material properties, and eddy current signal formation.

Step 2: Review equipment and probe selection. Learn when to use absolute or differential probes, encircling coils, surface probes, and tubing inspection arrangements.

Step 3: Practice technical calculations. Solve questions involving frequency, impedance, inductive reactance, fill factor, and depth of penetration.

Step 4: Improve signal interpretation. Learn how cracks, lift-off, conductivity variations, geometry, and permeability affect signal amplitude and phase.

Step 5: Study inspection procedures. Review calibration, reference standards, inspection coverage, reporting, acceptance criteria, and applicable safety requirements.

Step 6: Complete timed practice tests. Use MCQs to assess your preparation and concentrate on topics requiring additional revision.

Step 7: Obtain practical training. Work under qualified supervision and complete the experience and practical assessment requirements specified in your certification program.

Buy ASNT ET Level III Study Material – Advanced Question Bank

Are you planning to advance your NDT career and prepare for ASNT ET Level III – Electromagnetic Testing?

UpWeld also offers a separate advanced practice-question package for Level III preparation.

ASNT ET Level III Study Package

  • Question Bank: 2,000+ advertised practice questions

  • Coverage: Electromagnetic theory, technical applications, practical inspection concepts, and numerical problems

  • Price: $25.00 USD

  • Email: upweld.org@gmail.com

  • WhatsApp: https://wa.link/4dn6ee

The package is designed to provide additional practice and revision material for candidates preparing for advanced ET examinations.

For availability, formats, contents, and purchase details, please contact UpWeld before ordering.

Important: UpWeld practice questions are independent study resources. They are not official, leaked, or guaranteed questions from an ASNT examination. Purchasing study material does not guarantee certification or examination success.

More Free ASNT NDT Level III Practice Tests

Improve your nondestructive testing knowledge with additional free practice tests available on UpWeld.

Practice Test Free Quiz Link
ASNT LPT Level III Liquid Penetrant Testing Questions and Answers
ASNT MT Level III Magnetic Particle Testing Questions and Answers
ASNT RT Level III Radiographic Testing Questions and Answers
ASNT UT Level III Ultrasonic Testing Questions and Answers
ASNT Level III Basic Basic Level III Questions and Answers
ASNT ET Level III Electromagnetic Testing Level III Questions and Answers

 

Start Your ASNT ET Level 2 Practice Test Today

Whether you are preparing for an employer-based ET Level II certification assessment, improving your Eddy Current Testing knowledge, or planning to advance toward Level III, consistent technical study and practical experience are essential.

Take the Free ASNT NDT ET Level 2 Practice Test on UpWeld and strengthen your Electromagnetic Testing knowledge.

After completing the quiz, share your score in the comments section below. Tell us which topics you found most challenging and which areas you would like to practice next.

Contact UpWeld: upweld.org@gmail.com

Disclaimer: UpWeld is an independent educational website and is not affiliated with, endorsed by, or an official examination provider for ASNT. Candidates should always verify certification requirements with the relevant certifying organization or employer.

Frequently Asked Questions – ASNT ET Level II
Is this ASNT NDT ET Level 2 practice test free?

Yes. You can access the free ET Level II practice questions available on UpWeld and use them to revise important Eddy Current Testing concepts.

Is Eddy Current Testing the same as Electromagnetic Testing?

Eddy Current Testing is an important technique within the broader Electromagnetic Testing method. Other electromagnetic techniques include Alternating Current Field Measurement and Remote Field Testing.

How difficult is the ET Level II examination?

The difficulty depends on the certification program and inspection techniques covered. Candidates need a solid understanding of electromagnetic theory, equipment setup, calibration, numerical calculations, and practical signal interpretation.

What is the passing score for ET Level II?

The required passing marks depend on the applicable certification standard and employer’s written practice. Candidates should confirm the examination and grading requirements with the organization responsible for their certification.

Can I become ET Level II certified by passing this online quiz?

No. This online practice test is intended for learning and exam preparation. It does not replace formal training, documented experience, qualification examinations, or practical certification requirements.

What is the difference between ET Level I and Level II?

ET Level I personnel typically carry out assigned inspection activities according to written instructions under appropriate supervision.
ET Level II personnel have broader responsibilities, which may include selecting or verifying inspection techniques, setting up equipment, evaluating results, and preparing inspection reports within their approved certification scope.