Infrared Training Center Level 1 Practice Exam

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• What is the span?
• Which statement describes conduction energy transfer?
• What helps when trying to measure the temperature of a low emissivity object with an infrared camera or non-contact thermometer?
• Which statement is true about high reflectivity surfaces in infrared inspection?
• What unit is used to express midwave and longwave inbands?
• What are the three modes of heat transfer?
• Is a thermocouple suitable for measuring background or RTC according to the material?
• If an object absorbs 30% of incident radiation, what is its emissivity?
• Which factors change the field of view (FOV) of an infrared camera?
• Energy is exchanged by which two phase-change processes alone?
• Which statement differentiates thermography from night vision equipment?
• In the 8–12 μm band, which pair of materials is a good transmitter?
• At what temperature is infrared radiation emitted from an object?
• Doubling the load on a resistive connection is expected to increase the temperature rise by about how much?
• What does the spec IFOV tell you?
• Which of the following is a characteristic of thermography?
• What temperature range can Thermal Cameras measure?
• What term describes the reflected apparent temperature?
• Infrared thermography is defined as using thermal imaging to detect differences in temperature to identify outliers.
• Which of the following characteristics most directly causes a hot aluminum surface in a room-temperature environment to appear cooler on infrared instruments?
• Doubling the wall thickness and insulation has what effect on conductive heat transfer rates?
• Emissivity describes how closely a real surface matches the emission of a blackbody at the same temperature.
• Which organization does ITC follow for certification purposes?
• Lower emissivity increases potential error due to reflected background radiation.
• The components of incident radiation, or radiation striking the surface of a body, are what?
• In a vacuum, which heat transfer mode is used between surfaces?
• The 2.519 MRAD specification for a 9 mm lens indicates which type of lens?
• If the camera moves farther from the object while the spot size remains the same, the spot size ratio will
• Which items should you plan for when planning an electrical inspection from a drone?
• What is the detector resolution of the recommended infrared camera in the scenario?
• What is the Celsius to Fahrenheit conversion formula?
• If you want to alter how the scanned scene is interpreted after capture, which parameter would you adjust?
• During solar panel inspection, which irradiance value would likely be considered insufficient if the minimum is 600 W/m^2?
• Which source yields the most accurate emissivity values for thermography?
• For the most accurate IR temperature reading of a surface, which combination should the surface have?
• Why does water cool more slowly than the same mass of metal at the same initial temperature?
• How do emissivity and temperature affect the amount of infrared radiation emitted by an object?
• How would you identify a conduction heat transfer pattern on a thermogram?
• What is conduction?
• For solar panel inspection, the minimum irradiance required is closest to:
• What is zero degrees Celsius in Kelvin? What is 100 degrees Celsius in Kelvin?
• Explain the property of materials employed for roof, moisture surveys?
• What is meant by thermal tuning?
• Does heat transfer require temperature differences?
• What is the process of liquid turning into a gas?
• Which statement best describes the effect of condensation on surface temperature?
• What is the formula for conductive heat transfer?
• What is the field of view (FOV) defined as?
• What property of aluminum leads to it appearing cooler on an infrared camera?
• Emissivity values typically range from
• Why can an infrared camera reveal studs through an outside wall when viewing from inside?
• What is Multi-Spectral Dynamic Imaging (MSX)?
• If the camera angle to the target exceeds 60 degrees, what happens to emissivity and reflectivity?
• Two infrared images of a very small distant hotspot were captured: one in perfect focus and one slightly out of focus. Which statement is correct about accuracy and temperature readings?
• When does ASTM C1153 recommend starting a thermal roof survey?
• Can an infrared inspection be performed in an idle house that shows no temperature difference from the outside?
• Which statement about emissivity and reflected temperature is true in infrared image analysis?
• In a steady-state system with ongoing heat transfer, which statement is true?
• What is the primary purpose of setting the emissivity on an infrared camera to match the target's emissivity?
• What is a simple method to verify the ambient reference temperature for an infrared camera?
• What is the process of gas turning into a liquid?
• If an object's reflectivity is 0.0 and transmittance is 0.0, what is its emissivity?
• In infrared thermography, which combination of emissivity and reflectivity does aluminum typically exhibit?
• Which of the following irradiance values meets or exceeds the minimum requirement of 600 W/m^2 for solar panel inspection?
• Which statement about MSX is true?
• When measuring temperature with an infrared camera, what is the most reliable source for the emissivity value?
• What is the direction of heat flow?
• In infrared thermography, a thermal gradient is seen as what?
• What effect does solar absorption have on a component when viewed with an IR camera?
• Which mode can operate without any material medium, including vacuum?
• At what temperature can visible heat be seen?
• Which statement best describes the effect of evaporation on surface temperature?
• For a totally opaque surface, emissivity plus reflectivity is approximately equal to what?
• What is radiation?
• Does evaporation heat or cool the surface?
• Is an infrared image an image of thermal radiation differences?
• What makes up the total electromagnetic radiation COMING FROM an object?
• Why does a hot aluminum surface appear cooler on an infrared camera in a room-temperature environment?
• IFOV describes what aspect of the image?
• Why does it seem possible to see studs in a wall with an infrared camera?
• Which factor does not change the FOV?
• In an infrared image, what does reversing polarity do?
• In indoor infrared measurements, which statement is true about aluminum surfaces?
• What is the temperature accuracy of High Gain Cameras?
• Are background temperature and air temperature the same?
• Convection occurs in which kind of medium?
• What are some of the considerations when planning a thermal roof survey with a drone?
• What is temperature?
• Which energy type involves atomic nuclei and changes within the nucleus?
• Which object is used to measure background or RTC in the example method?
• Which statement about energy cannot be created or destroyed?
• For a 19 mm lens, if the IFOV is 0.895 MRAD, is it telephoto or wide IFOV?
• Which radiation has wavelengths longer than thermal infrared?
• Which of the following is NOT listed as a type of energy in the energy categories provided?
• What is spot size?
• What does IFOV describe?
• If a very hot object has emissivity less than 1.0, will its apparent temperature be lower, higher, or the same as the true temperature?
• In a hotspot imaging scenario, which image is more accurate, which shows the hottest temperature, and which shows the correct temperature?
• Reflected apparent temperature refers to energy sources that could be reflected into the camera.
• What is the single most important attribute necessary for thermal measurement?
• For solar panel inspections, which phrasing correctly states the minimum irradiance requirement?
• Infrared cameras detect energy in which range?
• Which post-processing adjustments are typically possible after saving an infrared image?
• IFOV is measured in which unit?
• Infrared radiation is emitted by which of the following?
• What is the typical wavelength range of the near-infrared band?
• Which statement about conduction is true?
• What does transient condition mean?
• Which materials are good transmitters in the 8–12 μm infrared waveband?
• In the inspection scenario, what is the diameter of the insulator to be inspected?
• What is a characteristic of a 'steady state' condition?
• How closely do apparent temperatures from high-emissivity targets track true temperatures?
• What is commonly used as a reference target for calibrating infrared cameras?
• Which energy type involves the energy of motion and position of macroscopic objects?
• Which form of energy emission is described by Stefan-Boltzmann law as proportional to T^4?
• Can you detect radiation emitted from a TV remote with your infrared camera?
• If the viewing angle to the target exceeds 60 degrees, which statement is true?
• How do you convert delta degrees Fahrenheit to delta degrees Celsius?
• Does a low emissivity target show apparent temperatures that are close to true temperatures?
• For an opaque surface, what is the relationship between emissivity and reflectivity?
• How does conduction transfer heat?
• During an infrared survey of overhead power components, the insulator is about 7 inches in diameter and the closest you can get to the disconnect is 100 feet. Which detector resolution and lens are recommended?
• For solar panel inspection, the minimum irradiance is specified as:
• For a surface with emissivity very close to 1, infrared emission at a given temperature is most similar to the reference of which?
• Which option involves completing an online assessment to renew certification?
• Infrared cameras detect energy primarily in which wavelength range?
• Does ordinary window glass have a very high transmissivity in the longwave infrared band?
• Do modern infrared cameras require external light sources to operate?
• Two objects have reached the same temperature and no energy is exchanged. What describes their relation?
• What is the Fahrenheit to Celsius conversion formula?
• Does infrared radiation transmit through metals?
• Which statement describes what a Flat Field Correction (FFC) corrects?
• Certification is described as what?
• When planning a thermal roof survey, what timing is recommended?
• What is the inband for Midwave infrared operation?
• Spot size ratio is defined as what?
• Does a high emissivity target show apparent temperatures that are close to true temperatures?
• As the temperature of an object increases the wavelength of that object does what?
• For a 6 inch solar cell, which grid resolution is suggested in planning a thermal solar inspection?
• What does spot describe in infrared camera measurements?
• What term describes a surface whose emissivity is less than 1?
• Which energy type is commonly associated with light and electromagnetic radiation?
• Which type of heat transfer can occur in a vacuum?
• Compared to a blackbody at the same temperature, the emissivity of a real surface is:
• Is reflected apparent temperature the same as air temperature?
• Infrared thermography identifies outliers by detecting differences in temperature.
• Does digital zooming improve or change the resolution?
• Which factor is NOT listed as a measurement adjustment in infrared temperature readings?
• In conditional based maintenance, what is meant by a base line study?
• For temperature measurement calibration of infrared cameras, what are used as reference targets?
• How do you convert a delta temperature from Celsius to Fahrenheit?
• In infrared thermography, a surface with which characteristics tends to yield the least reflected ambient infrared?
• If the viewing angle to the target is greater than 60 degrees, which statement best describes how emissivity and reflectivity change?
• With respect to calories what is the difference between 'C' and 'c'?
• Can energy be created or destroyed?
• When measuring reflected apparent temperature (RTC), what emissivity should be set to?
• An isotherm is best described as what?
• What is the term for the ability of an object to store thermal energy?
• Which term describes energy that is transferred because of a temperature difference?
• How do you measure background or RTC?
• A 19 mm lens on an SUAS camera is classified as Telephoto or Wide Angle?
• Which factors determine an object's emissivity?
• What emissivity setting should be used when measuring background/RTC in the example?
• Which factor is emphasized as a consideration when planning a thermal roof survey with a drone?
• Near-infrared lies between visible light and mid-infrared on the spectrum.
• Which of the following is a valid method to renew ITC certification?
• For thermographers, what is the significance of 8–12 micrometers?
• Are temperature measurements and temperature differences reliable when emissivity levels are incorrect?
• Which of the following is a basic unit of energy?
• Which heat transfer mode is the only one that works within opaque (non-transparent) solids?
• Which component is not part of incident radiation that strikes a surface?
• Can you see infrared radiation emitted by a TV remote with your naked eye?
• What are the components of incident radiation, or radiation striking a surface?
• Which value would be considered the clear minimum for solar panel inspection exposure?
• Which energy type is associated with the flow of electrons in circuits?
• How does sandblasting a smooth, shiny metal surface affect the emissivity of that surface?
• Spot size describes what aspect of infrared measurement?
• What emits infrared radiation?
• What does EMI stand for, and what effect can EMI have on a drone's control link?
• Which wavelength range between midwave and longwave is unsuitable for infrared cameras due to humidity?
• Can heat energy exist below 0 degrees C?
• Which statement about focus and temperature measurement accuracy is true?
• Which materials have high thermal conductivity?
• What is the term for energy transfer by electromagnetic waves?
• If a totally opaque object reflects 20% of incident IR radiation, what is its emissivity?
• RTC stands for what in infrared thermography?
• What is the physical mechanism that begins radiation heat transfer?
• What is the closest distance you can approach the disconnect for the infrared survey described?
• Does an infrared camera lens have a low emissivity?
• Do infrared cameras work exactly the same as night vision cameras?
• Is an infrared image an image of exact temperature distribution?
• Which property combination best describes cooler roof surfaces under the same conditions?
• Which statement best describes convection patterns seen in infrared imaging?
• Does condensation heat or cool the surface?
• What is the inband for Longwave infrared operation?
• If a surface has reflectivity 0.2 and transmittance 0.0, what is its emissivity?
• For thermographers, what is the significance of 3–5 micrometers?
• What is critical to obtaining accurate temperature measurements?
• Which statement about infrared imaging best describes what it measures?
• Can you measure background or RTC with a thermocouple?
• Which energy type relates to the energy stored in chemical bonds?
• According to the Stefan-Boltzmann Law, is the total energy emitted by a blackbody linear with respect to temperature?
• Which statement correctly describes MFOV?
• For the majority of infrared cameras, what critical parameters can be changed once an image is saved in digital format?
• Can you recalibrate your infrared camera by yourself with ordinary equipment?
• Which property explains why flat roofs may appear cooler than walls under the same conditions?
• Infrared readings show cooler apparent temperature for surfaces with which combination?
• Which of the following is NOT listed as a camera feature that assists in locating water under a thermoplastic membrane?
• Which emissivity values yield the greatest errors in infrared temperature measurement?
• In planning a thermal solar inspection with a drone, which value is used to characterize solar irradiance on the surface?
• Which display tool is used to map temperature differences to colors in infrared imagery?
• Which of the following is NOT one of the three important tools for pattern enhancement?
• Which statement describes what thermography primarily measures?
• Does the image from an infrared camera always represent exact variations in temperature?
• Why does a floor tile feel colder than carpet at the same temperature when touched?
• What happens when the viewing angle to the target is greater than 60 degrees?
• A blackbody is defined as what?
• Evaporation cools or warms the environment?
• What is the only heat transfer mode that (normally) works in a solid?
• What is heat?
• A micrometer is equal to how many meters?
• Which of the following is a feature of thermography?
• What does IFOV stand for in infrared thermography?
• Is a medium required for heat transfer by radiation to occur between surfaces?
• Which heat transfer mode occurs in opaque solids?
• What sort of medium does radiation heat transfer require?
• When using an infrared camera, how can you identify hot reflections from spotlight sources?
• Which statement is true about radiation energy transfer mechanism?
• Which type of radiation has a shorter wavelength than visible light?
• Is a 13mm lens on an SUAS camera telephoto or wide angle?
• Which of the following is an appropriate preflight consideration for drone-based thermal roof surveys?
• When measuring low emissivity objects with infrared equipment, which adjustment improves accuracy?
• Which option is NOT listed as a basic energy unit in the material?
• Which statement is true about thermography?
• What does instantaneous field of view (IFOV) tell you in infrared thermography?
• What does EMI stand for?
• Outside in low humidity, what is the coldest thing you can point your infrared camera at?
• The emissivity, reflectivity, and transmissivity of a surface must add up to what value?
• Which materials have high thermal conductivity?
• Infrared camera calibration can be performed by the operator using common household items.
• What does an infrared camera primarily detect to form an image?
• Is infrared radiation generated by microwave ovens to heat food?
• If a surface has zero transmissivity, what must be true about emissivity and reflectivity?
• Convection heat transfer takes place in which type of materials?
• Which statement correctly describes the field of view (FOV)?
• What is the function of a Flat Field Correction (FFC)?
• An object has a reflectivity of 0.20 and a transmittance of 0.30. Its emissivity is:
• What does the MFOV tell you in thermography?
• Measuring an extremely small, distant hot spot against the sky with an infrared camera tends to be what?
• The total electromagnetic radiation from an object consists of which components?
• What is the temperature accuracy of Low Gain Cameras?
• Which statement best describes heat transfer with respect to temperature differences?
• What is T reflect, T reflection, T refl, Tamb, Background or RTC?
• For the majority of infrared cameras, what 3 critical parameters cannot be changed once an image is saved in digital format?
• What lens is recommended for the camera in the described infrared survey?