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

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Here you can take Free ASNT NDT IR Level 2 Exam Practice Test with Latest Infrared Testing Method Question and Answers

1.

Infrared cameras measure:

 
 
 
 

2.

A camera has an IFOV of 1.9 mRad. What is its theoretical minimum spot size at a distance of 100 cm?

 
 
 
 

3.

The slit response function is used to measure:

 
 
 
 

4.

What is the most important factor when inspecting electrical equipment using IR?

 
 
 
 

5.

The plant’s main switchgear is to be inspected. The main switchgear has a new aluminum busbar. The emissivity of the new aluminum busbar is approximate:

 
 
 
 

6.

What weather conditions are necessary for conducting a thermal infrared roof inspection?

 
 
 
 

7.

How should the level and span be set when inspecting overhead electrical bus plugs?

 
 
 
 

8.

A thermal infrared inspection of a building is conducted to determine the presence of insulation. What is the recommended minimum temperature difference between inside and outside?

 
 
 
 

9.

An object that is not at thermal equilibrium with its surrounding environment is said to be:

 
 
 
 

10.

If the amount of insulation in an attic is increased from 10 cm to 20 cm (3.94 in. to 7.87 in.) what effect does it have on the conductive heat transfer?

 
 
 
 

11.

If the temperature difference from inside a house to outside the house decreases from 36 to 9 °C (64.8 to 16.2 °F), what effect does it have on the conductive heat transfer through the walls?

 
 
 
 

12.

When a thermal imaging radiometer is out of calibration and reading temperatures incorrectly, what can be done to bring it back into radiometric calibration?

 
 
 
 

13.

The effects of the sun can prevent the accurate inspection of light-frame buildings. In accordance with ASTM C 1060, how long should a wall of light frame construction be free from direct solar radiation in order to conduct an infrared inspection of the wall?

 
 
 
 

14.

A kilogram of each of the following materials is heated to 90 °C (194 °F). Which of the following materials has the most stored thermal energy?

 
 
 
 

15.

Latent heat energy can be described as:

 
 
 
 

16.

Which of the following surfaces will generally provide the most accurate radiometric temperature measurement?

 
 
 
 

17.

The instantaneous field of view (IFOV) measurement of a radiometric system is 1.2 mRad. What is the maximum size object this system can accurately measure at a distance of 25 m?

 
 
 
 

18.

The accuracy of the liquid level gauge on the 946 353 L (250 000 gal) oil tank is being questioned. Verification of the liquid level is critical but the safety manager is not available to issue a confined entry permit to physically verify the level. It is springtime. Last night was cool and it is now noon and a bright sunny day. What might you consider to determine the oil level?

 
 
 
 

19.

How hot does an electrical connection need to be for it to be classified as a serious problem?

 
 
 
 

20.

Most imaging infrared radiometers operate in the 3 to 5 or 8 to 12 um band. This is because of:

 
 
 
 

21.

Longwave (8-14 μm) infrared thermography is an excellent tool for inspecting all except which of the following:

 
 
 
 

22.

While doing an IR inspection of a heated stainless steel component with several surface holes you notice that one of the holes appears hotter than the others. What could explain this?

 
 
 
 

23.

After heating one side of a honeycomb composite with a 4-ply graphite-epoxy face sheet, and thermally viewing from the same side, you notice a dark or cool indication that seems to be confined to a group of honeycomb cells. What is the probable cause of this thermal pattern?

 
 
 
 

24.

From the ground, you see a hot spot on a 1 in. (2.54 cm) bolted connector of a transmission line that is approximately 27.4 m (90 ft) away. When you go to measure the temperature, it reads much lower than you think it should be, in fact, it appears to be below ambient. What is a probable reason?

 
 
 
 

25.

Thin film plastics, such as polyethylene, are thermally different from most materials because they are:

 
 
 
 

26.

Why is infrared thermal imaging often used by building analysts to locate mold growth?

 
 
 
 

27.

Which of the following materials has the highest thermal capacitance?

 
 
 
 

28.

Which of the following factors will have the greatest affect on the accuracy of temperature measurement of a loose connection on a copper alloy bolted plate connection? Assume the copper has an emissivity of 0.28.

 
 
 
 

29.

Which of the following lists gives the correct order for the thermal capacitance of the materials? Assume list goes from highest to lowest thermal capacitance.

 
 
 
 

30.

To measure the temperature of heater tubes in a natural gas-fired furnace using a mid-wave sensing system you must:

 
 
 
 

31.

You have found a motor bearing that is 32 °F warmer than normal. Convert this temperature difference (AT) to degrees Celsius.

 
 
 
 

32.

Which of the following typically has the greatest influence on taking a radiometric temperature measurement on a low-emissivity object?

 
 
 
 

33.

Which of the following camera settings has the greatest impact on taking an accurate temperature measurement of an object that actually has an emissivity of 0.87, a background temperature of 23.9 °C (75 °F), relative humidity of 50%, and a distance to the object is 3.05 m (10 ft)?

 
 
 
 

34.

While conducting a roof moisture inspection at night after a sunny day, why is it important for the roof surface to be dry?

 
 
 
 

35.

Which of the following materials emits quite differently in the mid-wave (3.5-5 microns) band than in the long-wave band (8-14 microns)?

 
 
 
 

36.

Using an infrared system with an IFOV measurement ratio of 180:1. What is the smallest size object you can accurately measure at a distance of 3 m (3.3 ft)?

 
 
 
 

37.

You are looking at an electrical connection 20 m in the air. What IFOV measurement is required to accurately measure the temperature on the 2.54 c (1 in.) head of a bolt?

 
 
 
 

38.

The IR system being used stores images to videotape. Back in the office, you find you’d like to adjust the level and span of an image. How is this accomplished?

 
 
 
 

39.

The easiest and cheapest way to improve the spatial resolution of a thermal image is to:

 
 
 
 

40.

The atmospheric attenuation for imaging systems that sense 8-12 microns of thermal radiation is:

 
 
 
 

41.

When looking at a thermal image, the thermographer is viewing:

 
 
 
 

42.

As a surface cools, the peak of its radiated infrared energy:

 
 
 
 

43.

The spectral band in which glass transmits infrared radiation most efficiently is the region.

 
 
 
 

44.

When water freezes:

 
 
 
 

45.

The energy content of a gram of steam at 100 °C (212 °F) is much higher than that of a gram of water at 100 °C (212 °F) because of the:

 
 
 
 

46.

The heat capacity of an object is:

 
 
 
 

47.

What component of earth’s atmosphere will completely or partially absorb infrared electromagnetic energy in the wave band of 6-8 um?

 
 
 
 

48.

Since wind will convectively cool building components reducing thermal differences, it is not advisable to perform building inspections on the windward side when air speeds are in excess of:

 
 
 
 

49.

Which of the following statements regarding infrared emission and absorption is false?

 
 
 
 

50.

Radiosity is defined as:

 
 
 
 

51.

Distribution of energy over the wavelength spectrum for a given temperature is best described by which of the following?

 
 
 
 

Question 1 of 51

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

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

 

Prepare for your Infrared Thermography Level II examination with 51 free practice questions and answers on UpWeld.

Are you looking for a Free ASNT NDT IR Level 2 Exam Practice Test to improve your understanding of Infrared and Thermal Testing methods?

You have come to the right place!

At UpWeld, we provide a free online ASNT IR Level II practice quiz to help NDT technicians, thermographers, inspection professionals, and students strengthen their theoretical and practical knowledge.

Our practice test includes 51 multiple-choice questions (MCQs) covering infrared testing principles, thermal imaging equipment, heat transfer, emissivity, temperature measurement, thermal image interpretation, and real-world inspection applications.

Whether you are preparing for an employer-based NDT Level II qualification examination or improving your infrared thermography skills, this free quiz can support your preparation.

Start your free ASNT IR Level 2 practice test today and check how well you understand Infrared Testing (IR).

What Is ASNT IR Level II – Infrared and Thermal Testing?

Infrared Testing (IR), also known as Infrared Thermography, is a non-destructive testing method that uses infrared radiation to evaluate surface thermal patterns and identify temperature differences.

Infrared cameras detect radiation from surfaces and their surroundings to produce thermal images. With the correct measurement settings, these images help inspectors estimate surface temperatures and identify abnormal thermal conditions.

Infrared thermography is widely used in:

  • Electrical equipment inspections

  • Mechanical equipment condition monitoring

  • Industrial predictive and preventive maintenance

  • Building insulation and energy inspections

  • Moisture-related thermal investigations

  • Heating, ventilation, and air conditioning (HVAC) inspections

  • Industrial process monitoring

  • Selected composite material inspections

What Does an IR Level II Technician Do?

An Infrared Testing Level II technician is generally expected to have more advanced knowledge and practical inspection skills than a Level I technician.

Depending on the applicable certification scheme and employer’s written practice, Level II responsibilities may include:

  1. Selecting suitable infrared inspection techniques and equipment.

  2. Performing infrared inspections according to approved procedures.

  3. Understanding emissivity, reflected temperature, and environmental influences.

  4. Analyzing thermal images and identifying abnormal temperature patterns.

  5. Evaluating inspection results within the requirements of applicable procedures.

  6. Preparing inspection reports with relevant findings and supporting thermal images.

  7. Providing technical guidance to Level I personnel within the scope of qualification.

Free ASNT NDT IR Level 2 Practice Test – 51 MCQs

This free online quiz is designed to test your understanding of important Infrared and Thermal Testing concepts.

Practice Test Details:

  • Exam: ASNT NDT IR Level 2 Practice Test

  • Method: Infrared and Thermal Testing (IR)

  • Level: Level II

  • Total Questions: 51 MCQs

  • Question Type: Multiple Choice

  • Practice Test Fee: Completely Free

  • Access: Online

  • Study Area: Infrared Thermography Theory and Practical Applications

How to Take the Free IR Level II Quiz

Step 1: Start the free practice test on this page.

Step 2: Read every question carefully and select the most appropriate answer.

Step 3: Complete all questions without checking your study materials if you want to simulate examination conditions.

Step 4: Submit your answers and review the results provided by the quiz.

Step 5: Identify the topics in which you made mistakes and review the relevant infrared testing principles.

Step 6: Repeat the practice test to strengthen your knowledge.

Take the Free ASNT IR Level 2 Exam Practice Test Above.

ASNT IR Level 2 Exam Practice Test Syllabus and Topics

Our practice questions cover important areas of infrared thermography theory, equipment operation, thermal analysis, and industrial applications.

1. Introduction to Infrared Testing Principles and Theory

Understanding the physical principles of infrared radiation and heat transfer is essential for accurate thermal inspection.

Important topics include:

  • Infrared radiation and the electromagnetic spectrum

  • Heat transfer by conduction, convection, and radiation

  • Blackbody radiation and graybody concepts

  • Planck’s Law

  • Stefan-Boltzmann Law

  • Wien’s Displacement Law

  • Thermal equilibrium and transient thermal conditions

  • Radiant energy, radiance, and radiosity

  • Qualitative and quantitative thermography

2. Materials Characteristics and Thermal Properties

Different materials produce different thermal responses depending on their physical properties and surface conditions.

Important topics include:

  • Emissivity and absorptivity

  • Reflectivity and transmissivity

  • Thermal conductivity

  • Specific heat capacity

  • Thermal diffusivity

  • Thermal capacitance

  • Surface finish and oxidation

  • Reflected apparent temperature

  • Effects of moisture and insulation

  • Thermal behavior of metals, plastics, composites, and building materials

3. Infrared Thermal Instrumentation Overview

A Level II technician should understand how infrared cameras operate and what affects measurement accuracy.

Important topics include:

  • Infrared camera principles and components

  • Cooled and uncooled detector systems

  • Infrared detector spectral response

  • Mid-wave and long-wave infrared systems

  • Field of View (FOV)

  • Instantaneous Field of View (IFOV)

  • Measurement spot size

  • Thermal sensitivity and Noise Equivalent Temperature Difference (NETD)

  • Camera calibration and accuracy

  • Focus, image resolution, and temperature measurement limitations

  • Infrared camera settings and adjustments

4. Operating Equipment and Understanding Results

Correct camera operation and thermal image interpretation are essential for obtaining reliable inspection results.

Important topics include:

  • Thermal camera setup and adjustment

  • Emissivity correction

  • Reflected apparent temperature compensation

  • Atmospheric effects on infrared measurements

  • Thermal image focus and composition

  • Temperature level and span

  • Thermal palettes and image contrast

  • Qualitative versus quantitative temperature assessment

  • Thermal anomaly identification

  • Image analysis and measurement errors

  • Inspection limitations and false indications

  • Thermal image reporting and documentation

5. Infrared Testing Applications

Infrared thermography is used in industrial and commercial inspections to detect abnormal thermal conditions.

Important applications include:

Electrical Inspections

Identifying unusual heating patterns associated with loose connections, overloaded components, and electrical equipment problems while following electrical safety procedures.

Mechanical Inspections

Monitoring bearings, motors, rotating machinery, and other mechanical components for abnormal thermal behavior.

Building Inspections

Investigating insulation deficiencies, air leakage patterns, thermal bridges, and moisture-related thermal anomalies.

Industrial Equipment Inspections

Evaluating thermal conditions in furnaces, storage tanks, process equipment, and other industrial systems.

Preventive and Predictive Maintenance

Using thermal inspection information to support equipment reliability, identify developing problems, and plan maintenance activities.

Why Practice ASNT IR Level II Questions and Answers?

Practicing infrared thermography MCQs is an effective way to review technical concepts and identify areas that require further study.

Benefits of Taking the UpWeld Free Practice Test

1. Improve Your Theoretical Knowledge

Review important principles such as heat transfer, infrared radiation, emissivity, and temperature measurement.

2. Develop Better Thermal Image Interpretation Skills

Practice questions involving thermal patterns, measurement limitations, and inspection conditions.

3. Strengthen Numerical Problem-Solving Skills

Review calculations involving heat transfer, temperature differences, IFOV, and other thermal testing concepts.

4. Identify Knowledge Gaps

Discover which topics require additional study before your qualification examination.

5. Practice Anytime, Anywhere

Access this free online quiz using your computer, tablet, or mobile device.

6. Build Confidence Before Your Examination

Become more familiar with technical questions and improve your preparation through repeated practice.

Important Formulas for IR Level 2 Exam Preparation

Some Infrared Thermography Level II questions involve numerical calculations and the application of physical laws.

Stefan-Boltzmann Law

For the radiant exitance of an ideal blackbody:

M = σT⁴

Where:

  • M = Radiant exitance (W/m²)

  • σ = Stefan-Boltzmann constant

  • T = Absolute temperature in Kelvin

For a graybody with constant emissivity:

M = εσT⁴

Where ε represents emissivity.

Fourier’s Law of Heat Conduction

For one-dimensional steady-state conduction through a flat material:

Q = kA(ΔT/L)

Where:

  • Q = Heat transfer rate (W)

  • k = Thermal conductivity (W/m·K)

  • A = Cross-sectional area (m²)

  • ΔT = Temperature difference (K)

  • L = Material thickness (m)

Instantaneous Field of View

The approximate theoretical projected spot size at a specified distance can be estimated using:

Spot Size ≈ Distance × IFOV (in radians)

For example, with an IFOV of 2 mrad at a distance of 5 metres:

Spot Size ≈ 5 × 0.002 = 0.01 m = 10 mm

Remember that the minimum target size required for accurate radiometric measurement is often larger than a single theoretical IFOV spot.

How to Prepare for an IR Level II Qualification Examination

Follow these practical study tips to improve your preparation:

  1. Review Level I fundamentals before studying advanced Level II concepts.

  2. Understand conduction, convection, radiation, and thermal properties.

  3. Practice emissivity correction and reflected temperature compensation.

  4. Study infrared camera specifications, limitations, and measurement settings.

  5. Learn to recognize meaningful thermal anomalies without confusing reflections with actual temperature differences.

  6. Practice numerical questions involving heat transfer and infrared measurements.

  7. Review electrical and mechanical inspection examples.

  8. Study inspection safety requirements and reporting procedures.

  9. Take multiple practice quizzes and review incorrect answers.

  10. Consult the applicable certification requirements, employer’s written practice, standards, and approved training materials.

ASNT IR Level II Certification and Training Requirements

Infrared Thermography qualification and certification requirements depend on the applicable certification program.

Employers using ASNT Recommended Practice SNT-TC-1A generally establish qualification and certification requirements through their written practice. ANSI/ASNT CP-189 provides requirements for employer-based NDT personnel qualification and certification.

Other infrared thermography programs may follow ISO 18436-7 requirements for condition-monitoring thermographers.

Candidates should confirm their required training, experience, examinations, and practical assessments with their employer or certification provider.

A free practice test is a preparation resource and does not replace formal training, examination, practical assessment, or certification.

Explore More Free ASNT NDT Practice Tests

Continue your NDT exam preparation with these additional free practice quizzes available on UpWeld.

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ASNT IR Level II Study Material and Question Bank

Looking for additional ASNT IR Level II study resources, practice questions, and examination preparation material?

Contact UpWeld to ask about available study resources for Infrared Thermography, including theory questions, numerical exercises, and practical inspection topics.

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Start Your Free ASNT NDT IR Level 2 Practice Test Today!

Preparation for an Infrared Thermography Level II qualification examination requires a clear understanding of thermal physics, infrared camera operation, measurement accuracy, and practical inspection techniques.

The UpWeld Free ASNT IR Level 2 Exam Practice Test provides a convenient way to review important topics, practice multiple-choice questions, and assess your understanding.

Take the free 51-question IR Level II quiz, review your results, and improve your infrared testing knowledge.

After completing the quiz, share your score or questions in the comments section below. Your feedback can help other NDT learners prepare more effectively.

Keep learning, keep practicing, and improve your NDT skills with UpWeld!

Disclaimer: UpWeld is an independent educational website and is not affiliated with or endorsed by ASNT. These practice questions are for educational purposes only. They are not official ASNT examination questions, and examination success is not guaranteed.

Frequently Asked Questions – ASNT IR Level 2 Practice Test
Is the ASNT IR Level 2 practice test on UpWeld free?

Yes. You can access the 51-question Infrared Testing Level II practice quiz on UpWeld without paying a practice-test fee.

How many questions are included in this free IR Level II quiz?

This practice quiz currently contains 51 multiple-choice questions covering infrared testing principles, thermal camera operation, material properties, heat transfer, and inspection applications.

Is this an official ASNT certification examination?

No. This is an independent educational practice test offered by UpWeld. It is not an official certification examination administered by ASNT.

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

Level I generally focuses on fundamental thermography principles and performing inspections under established instructions. Level II involves more advanced equipment selection, measurement techniques, result interpretation, inspection procedures, and reporting responsibilities.
Exact responsibilities depend on the certification program and applicable written practice.

What are the most important topics for IR Level II preparation?

Important topics include infrared radiation, emissivity, heat transfer, thermal properties, camera measurement settings, image interpretation, environmental influences, inspection applications, and technical reporting.

Can I prepare for an infrared thermography qualification examination using online practice tests?

Yes. Practice tests can support examination preparation, but they should be used with suitable training, practical experience, approved reference material, and the requirements of the applicable qualification or certification program.

Does infrared thermography detect internal defects directly?

Not necessarily. Infrared thermography primarily evaluates surface radiation and thermal patterns. Subsurface conditions may produce detectable surface thermal contrasts under appropriate circumstances, but successful detection depends on factors including material properties, defect depth, inspection technique, and thermal conditions.

Can an infrared camera measure temperature accurately on shiny metal surfaces?

Low-emissivity, highly reflective surfaces can create significant measurement errors. Accurate measurements require suitable techniques, correct settings, and appropriate compensation for reflected radiation and other influences.

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