CDC EOC Test with 100% correct answers 2024.

TOs provide all of the following pertaining to the inspection operation, maintenance, and modification of AF equipment and material except... - answer-policy directives Simply stated, a TO is considered to be... - answer-a military order TOs are established, numbered, and issued in accordance with which TO? - answer-00-5-1 Which type of TO covers installation, operation, troubleshooting, repairing, removing, calibration, and servicing, or handling of AF military systems? - answer-operations and maintenance TOs Enhanced Technical Information Management System (ETIMS) provides a direct on-line connectivity from every base into the management system to allow all except... - answer-most current publication date To find the most current publication date of a TO, check... - answer-the TO index The Maintenance Integrated Data Access System is... - answer-a six-digit numbering system expressed as three elements of two digits each What information does the NDI general system manual provide? - answer-inspections What type of equipment manual would contain equipment calibration requirements? - answer-operation and service manual A group assembly parts list has several part numbers listed for a part you need. To determine which part number is right for your aircraft, refer to the... - answer-usable on code column Where would you find information for recording and reporting a NDI technique to inspect an F-16C aircraft speed brake? - answer-TO 33B-1-1 You are tasked to do an inspection; however you only know the name of the part you are to inspect. To locate the applicable paragraph and figure number for the inspection, check the TOs - answer-alphabetical index While doing a job you find a mistake in a TO. Correcting this requires initiation of a "Technical Manual Change Recommendation and Reply" form. Who is responsible for this action? - answer-you Which change recommendation priority must be answered within 40 calendar days? - answer-urgent Which type change recommendation priority is used to recommend improvements to correct potential hazards? - answer-routine Which TO contains complete instructions for maintaining TOs? - answer-00-5-1 Electronic technical orders are files identified by a media distribution code suffix of... - answer--WA-n You need to order a new TO for personnel use on a regular basis; how would you accomplish this action? - answer-establish an ID requirement The TO listing for your shop's operational TO file will show you all of the following except... - answer-who currently has one signed out Responsibility for consolidating TO requests on an installation rests with the... - answer-personnel in the TODO With few exceptions, you must file TOs within a maximum of... - answer-five workdays of receipt A TO effective date is... - answer-later than the basic date In which TO chapter would you find page 4-2? - answer-4 File TO supplements in... - answer-reverse numerical order in front of the basic TO Enhanced Technical Information Management System (ETIMS) will be updated automatically in no more than how many days? - answer-7 calendar days Who has ownership of AF supplies and equipment? - answer-the american taxpayer The purpose of the AF supply system is to... - answer-provide a standard means of purchasing, distributing, and controlling equipment/supplies required by the AF Which system is used to determine whether your NDI laboratory is authorized a piece of equipment? - answer-AFEMS Which form is used to request an item not listed in the Federal Supply System? - answer-DD Form 1348-6 Which condition tag would be placed on an eddy current unit being sent back to depot for repair? - answer-Green DD Form 1577-2 All of these are requirements for an initial journeyman skill level except you must... - answer-complete 9 months of on-the-job training From the lowest to the highest, what are the three levels of maintenance cabability? - answer-organizational, intermediate, depot Which level of maintenance involves major repairs and overhaul? - answer-depot Which inspection involves a thorough and searching review of an entire weapon system? - answer-periodic (pe) Which inspection attempts to minimize the length of time an aircraft is down for inspection? - answer-phase (ph) Which inspection is based on calendar days? - answer-isochronal (iso) Which maintenance symbol would be used to indicate a scheduled periodic (pe) inspection is overdue? - answer-red dash Which symbol signifies that an unsatisfactory condition exists? - answer-red diagonal Category I DRs are not used to report conditions? - answer-resulting from nonconformance to specifications Maintenance data documentation (MDD) is grouped into what categories? - answer-on- and off-equipment You would not find maintenance data documentation (MDD) rules in... - answer-TO 00-35D-54 Maintenance information system (MIS) refers to an automated maintenance information system that supports and enables what? - answer-maintenance business processes Which maintenance data documentation (MDD) code is used as the primary method of sorting information? - answer-work unit The AF maintains a limited number of these maintenance data documentation (MDD) codes to simplify reporting? - answer-how malfunctioned Which is not a maintenance inspector function? - answer-verify the quantity of modified parts is correct All engine flight data can be found on AFTO form? - answer-781J What is the correct format for entering a date in the 781 series forms? - answer-YYYYMMDD Which blocks are used by NDI personnel to clear all red dash discrepancies? - answer-inspected by and employee no. blocks What is used to record service, periodic, and special inspections, and the current status of equipment? - answer-AFTO 244 What indicates a special inspection or operational check is due, a scheduled inspection is overdue, and the equipment is in an unknown condition? - answer-a red dash What is a database developed for the NDI career field in an effort to reduce paper and improve the management of process controls and equipment maintenance? - answer-PCAMS What are commanders, staff officers, and supervisors responsible for when it comes to accident prevention? - answer-enforcing standards and regulations The minimum temperature required for a substance to initiate self-sustained combustion is known as the... - answer-ignition temperature The danger from static electricity is highest during... - answer-cold, dry weather All of these have the potential for serious injury, when wearing jewelry except... - answer-wearing gloves on the hand to prevent injury Which personal protective equipment is not normally used in the NDI lab? - answer-long sleeves Unattended parked vehicles on the flightline must... - answer-have keys left in the ignition Engine position numbers on multi-engine aircraft are assigned consecutively from the... - answer-tip of the left wing to tip of the right wing Where is an aircraft elevator located? - answer-on the empennage The tie-down rings on AGE are normally attached to the... - answer-frame AGE power system components are not made from... - answer-copper How are permanent joints on AGE enclosures normally attached? - answer-riveted How many standard markings are applied to all AF aircraft? - answer-six Where are station numbers located on fixed wing aircraft? - answer-nose Which is not an aircraft identification and safety marking? - answer-crew What symbol is used to indicate an installed ejection system? - answer-triangle with apex pointed down What small and subdued safety marking alerts you to hazardous condition? - answer-warning text Depending on the type of aircraft and engine, how big is the noise safety zone circle surrounding the aircraft? - answer-300 to 400 yards What form is the physical structure of metal? - answer-crystalline The process of improving a metal's characteristics by altering its grain structure is known as... - answer-heat-treating Maximum toughness obtains proper balance in all of these properties except... - answer-strength Which of the following properly illustrates the relationship between mechanical properties in metal? - answer-as hardness decreases, brittleness decreases Within the Aluminum Association 1xxx number group, what does the first digit indicate? - answer-metal containing at least 99 percent pure aluminum What three methods are used to produce tempered aluminum? - answer-cold working, heat-treating, and a combination of both The term NDI indication refers to... - answer-evidence of a response resulting from a process In metallurgy, which of the following is not a discontinuity? - answer-weld Which discontinuity is created by the melting and original solidification of a metal into an ingot? - answer-inherent Which of the following is not a defect of the wrought process? - answer-inclusions What is another name for slag? - answer-inclusion Which defects are usually easier to detect because they are nearly always appear on the surface of the finished part? - answer-secondary processing The reason fatigue failure is progressive is that when a crack begins... - answer-its ability to advance is increased by stress concentration, although the rate of stress can vary Fatigue cracks usually run... - answer-perpendicular to the direction of applied stress Stress corrosion is caused by... - answer-tensile stress and corrosion The potential for discontinuities is increased by the... - answer-welding process used to attach two pieces of metals together The two basic processes used to weld parts together are... - answer-adhesion and fusion An experimentation and demonstration process designed by engineers to gather results from actual inspections is referred to as a probability of detection (POD) is also known as? - answer-study The probability of detection (POD) curve may not be used for which basis? - answer-scheduling maintenance when required due to malfunctions The purpose of pre-cleaning parts is to remove... - answer-light soils and contaminants Light oil contamination on a part being inspected can cause... - answer-contamination of penetrant or magnetic inspection solutions One characteristic of a detergent cleaner is that it must be... - answer-noncorrosive Paint removers can be a... - answer-solvent, bond release agent, softening agent, or a combination Which of the following is not a result of mechanical cleaning methods? - answer-etching of critical surfaces Which of the following identifies NDI requirements from least to most cleanliness required? - answer-eddy current, ultrasonic, magnetic particle, liquid penetrant NDI techniques are defined as specific instructions for evaluating.. - answer-quality, integrity, properties, and dimensions Which of the following is not a reason for a backup NDI method in a TO? - answer-replace primary methods When considering non-standard equipment for your new inspection technique, what must you ensure? - answer-it is listed on the AS455 Which form do you use to submit your new NDI technique for review and publication? - answer-AFTO Form 242 Which NDI techniques are approved by the laboratory supervisor? - answer-support equipment inspections Who adds, revises, or supplements your submitted technique in order to produce a workable procedure? - answer-Air Logistics Center (ALC) NDI program managers What is the distance a magnifier can be moved toward or away from the specimen and retain a good image called? - answer-depth of field What type of indication has sharp and jagged lines that follow the grain boundaries? - answer-crack What ratings are engraved on auxillary lenses, eyepieces, and calibrated zoom control knobs? - answer-initial magnification Which does not determine the type of borescope you will need for your lab? - answer-AGE equipment Which type of borescopes are the most commonly used in the AF? - answer-rigid borescopes What do you use to clean optical lenses that have a protective coating? - answer-water When the stereo-microscope is not in use, its eyepieces should always be kept installed... - answer-on the power body What are desirable qualities within a penetrant? - answer-high surface tension and good wetting ability What generates forces to draw a penetrant into cracks? - answer-capillary action What chemical property is required to dissolve and hold the dyes in a solution? - answer-solvent ability What sensitivity level of penetrant is ultra-high? - answer-level 4 Type 1 penetrant process employs... - answer-fluorescent materials What is a method C penetrant inspection? - answer-solvent removable The system concept applies to what materials of a penetrant system? - answer-penetrants and emulsifiers What is the maximum dwell time of an aqueous developer? - answer-60 minutes In the hydrophilic process, what is the concentration range of hydrophilic remover in water? - answer-5 to 35 percent What type of developer consists of inert particles in water? - answer-water-suspended What should you wear in case you mistakenly press the penetrant spray nozzle with the opening pointing back at you? - answer-chemical goggles Aerosol cans burst when heated to temperature above... - answer-120 degrees fahrenheit The difference between the small, medium, and large fluorescent penetrant inspection units is the... - answer-size of the parts they can accommodate What is the ideal output in nanometers (nm) of a black light bulb for penetrant inspections? - answer-365 nm What should you never do while utilizing Method C? - answer-spray or pour solvent directly on a part surface before inspection Nonaqueous solvent-based developers are always applied by... - answer-spraying For the spray technique, what is the concentration range of remover to water volume? - answer-1.0 to 5.0 percent Which of the following is considered a defect? - answer-a detrimental relevant indication What indications are caused by discontinuities such as cracks, seams, or laps? - answer-continuous linear indications Which of these contaminants are not frequent contaminates of penetrant line materials? - answer-developer Since fluorescent penetrants are sensitive to elevated temperatures, fluorescence may be destroyed by being exposed to temperatures above... - answer-250 degrees fahrenheit What is the interval for performing a system performance test? - answer-weekly Method C system performance tests are completed when penetrant materials are stored in an environment that exceeds... - answer-120 degrees fahrenheit When cleaning test panels for the second time while using the Method D system performance test, how long do you let them sit in an ultrasonic cleaner? - answer-10 minutes What type of contamination does a hydrophilic remover refractometer test for? - answer-penetrant What is used for testing the performance of hydrophilic remover? - answer-annealed type 301 or 302 stainless steel panels As parts are processed, developer adheres to the part surface; unless concentrate is added, the developer loss adds up. What is the term for this loss over time? - answer-drag-out Over a 3-inch diameter circle with a minimum distance of 15 inches from the filter lens, the desired intensity in micro-watts per square centimeter of a black light check should be at least... - answer-1000 micro-watts per square centimeter What is the unit of measure for electromotive force? - answer-volt What is the term for the rate at which electrons pass a given point in a conductor? - answer-current A metal that is easily magnetized has... - answer-high permeability What are lines of force in a leakage field called? - answer-magnetic flux lines The best results obtained from flux lines are located in which direction to discontinuities? - answer-perpendicular With an increase of magnetic flux lines flowing through a piece of iron, magnetic particles concentrate at... - answer-leakage fields When domains that are randomly oriented result in an overall flux density of zero, a part... - answer-has been completely demagnetized Which type of magnetization detects longitudinal discontinuities? - answer-circular field What is a conductive material that is placed in the center of a part under inspection called? - answer-central conductor bar What is the recommended current value in amperes (amps) on stationary equipment when inducing alternating current (AC) current? - answer-100 to 10,000 amps Which magnetic particle equipment requires the operator to depress a foot switch? - answer-stationary What portable equipment devices are limited to the detection of surface and near-surface discontinuities only? - answer-probes and yokes When demagnetizing, how far do you lift a model type DA-200 away from a large part before turning the probe off? - answer-2 feet What type of measuring device is a quantitative assessment of a magnetic field and may be useful in covering a curved area of a part, such as a radius? - answer-quantitative quality indicator (QQI) How often should accumulated moisture from a stationary inspection unit's air filter be removed? - answer-weekly To improve flexibility of pole pieces on portable equipment, what should you NOT use? - answer-oil What is the liquid transporting magnetic particles called? - answer-vehicle What is primarily used for inspecting welds and castings where defects are found below the surface? - answer-dry particles When applying particles, which method do you turn off the particle flow just before the final application of current? - answer-wet continuous When inspecting with magnetic particle, parts may need to be stripped if the thickness exceeds... - answer-0.003 inch All of these determine the choice of technique for a particular magnetic particle inspection except the... - answer-part's surface condition The depth at which a discontinuity can be longitudinally detected depends upon the size and shape of the discontinuity relative to all of these except for the... - answer-surface conditions affecting indications In order to produce the same flux density in a part, the... - answer-smaller the length to the diameter ratio (L/D), the greater the coil current amperage must be Which type of magnetic field is easily detected with a field indicator? - answer-longitudinal field When using longitudinal magnetization technique, use additional parts if necessary in order to establish a part length of a ratio diameter of at least... - answer-2 Discontinuities are best detected when they are... - answer-perpendicular to the magnetic field What may occur as the result of an accident or a part becoming overloaded? - answer-overstressing What is it called when two parts touch creating magnetic poles at the points of contact? - answer-magnetic writing What is the term to describe demagnetizing of a part using stationary equipment, with the motor used to drive the demagnetization switch contactor going from maximum to minimum current positions? - answer-step-down procedure When demagnetizing using a portable yoke, what is the next step after passing the part through the yoke legs while energized? - answer-turn the test part 90 degrees and repeat the procedure What is a common contaminatn of petroleum-base baths? - answer-water When do aerosol cans need the system effectiveness check completed? - answer-prior to initial use, and before daily use if they are older than two years from manufactured date How long do you agitate the suspension and let it run through the hose before performing the particle concentration test? - answer-1 minute Which process control is performed on portable electromagnetic yoke equipment? - answer-dead weight check What produces an alternating magnetic field in eddy current testing? - answer-probe Current that is flowing through a circuit is measured in... - answer-amperes What do you use to detect differences between permeability variations and cracks? - answer-phase detection Eddy current inspection can do all of the following except? - answer-detect all subsurface cracks Effective depth of penetration is the depth in the inspection article at which the magnetic field strength or intensity of the induced eddy currents is reduced to what percent of the value at the surface? - answer-5 What a test coil is moved away from a part due to lift-off, magnetic coupling between the test coil and inspection part... - answer-is decreased What effect do surface eddy current, the secondary field, and depth of penetration have on poor conductivity? - answer-weaker surface eddy currents, weaker secondary field, and a greater depth of penetration Which mode of operation has two small sensing coils wound side-by-side in the shape of two back-to-back capital D's? - answer-differential Which type of eddy current coil has differential sensors that are directionally sensitive and provide detection of cracks tips? - answer-conformal coil What happens when an eddy current probe coil arrangement is closer to the test surface? - answer-small cracks can be detected due to greater sensitivity Eddy current instruments must have all of these capabilities except? - answer-dependability Eddy current instruments are designed to measure what three signal qualities? - answer-amplitude, phase, and frequency What is used to detect disturbances in the magnetic field produced by passing an alternating current in a thin planar foil of doped yttrium iron garnet? - answer-magneto-optic imaging How do you remove dust when cleaning an eddy current instrument? - answer-use a lint-free cloth Paint or other nonconductive coatings should be removed when in excess of how much of an inch? - answer-0.010 What is the name of the location on an impedance plane at which an eddy current instrument is usually called the "good" or reference condition? - answer-null point What type of filter removes the low frequency components of the eddy current signal from the bridge? - answer-high-pass Modulation analysis is useful in separating signals of interest from other signals and relies on the analysis of what? - answer-time While repeatedly scanning the 0.020 inch notch on an aluminum standard, vertical and horizontal gain must be increased to reach how much of the full screen height during initial nulling? - answer-80 percent Inspection for cracks, measurement of conductivity, or hardness can often be complicated by what two factors? - answer-surface damage and manufacturing processes The direction of tensile stress cracks are often analyzed by... - answer-engineer stress test historical cracking in the part What type of defects are usually caused by repeated cyclic loading of a structure at lower stress levels than required for visible deformation in fastener holes? - answer-fatigue cracks Conductivity is commonly measured in units of... - answer-mho Alloy effects on conductivity are caused by all of these except? - answer-cold working Conductivity decreases about how much in percent International Annealed Copper Standard (IACS) for a 20 degrees Fahrenheit temperature increase for aluminum alloys? - answer-one What is conductivity probe selection based on? - answer-thickness What is the advancement of a wave through a medium by tranferring energy from one molecule to another? - answer-propagation Ultrasonic vibrations generate by applying electrical energy to what part of the transducer? - answer-piezoelectric element Which wave mode is used to extensively for thickness inspections, corrosion thinning, and for the detection of other defects parallel to the the inspection surface? - answer-longitudinal What is the angle between an incident longitudinal wave and a line normal to the surface called? - answer-incident angle What is the term for a change in direction of an ultrasonic beam as it passes through the interface between two materials with different acoustic velocity? - answer-refraction Extending from the face of the transducer is an area characterized by wide variations in sound beam intensity known as... - answer-near field During beam spread, sound extends outward from the transducer and does what to intensity and distance? - answer-decreases in intensity with increasing distance Acoustic pressure directly relates to what in the material particle vibrations caused by sound waves? - answer-amplitude What is a fine-delay control used to compensate for transducer faceplate wear? - answer-zero offset What reduces irrelevant low-level signals and noise on the waveform display? - answer-reject What electronically compensates for material attenuation? - answer-distance amplitude correction (DAC) What moves the part surface out of the dead zone, thereby improving near-surface resolution? - answer-delay lines Which couplant is authorized for use without specific engineering approval? - answer-gel Which American society of Testing and Materials (ASTM) block would you use if you have a 7075 aluminum block with a 3/64 inch diameter hole and a 3.0 inch metal travel distance? - answer- What do you do with ultrasonic instruments if you find malfunctions or discrepancies not covered in the current technical manual or the unit does not meet acceptable criteria and you cannot make adjustments? - answer-refer to precision measurement equipment laboratory (PMEL) What date presentation displays signal amplitudes in various color schemes? - answer-c-scan What ultrasonic technique inspects thin test parts when the dead zone prevents an inspection with another method? - answer-through-transmission Which inspection technique will you use when inspecting around fastener holes, cylindrical components, skins, and welds? - answer-angle beam Indications on an ultrasonic waveform display determine the... - answer-location of a discontinuity Assess the out edges of discontinuities by noting the positions of the center of the transducer when the signal amplitude from the discontinuity reduces to the vale of... - answer-1/2 its peak According to TO 33B-1-2 Nondestructive Inspection General Procedures and Process Controls, when do you complete all ultrasonic process controls? - answer-quarterly What are the three system process controls required for ultrasonics? - answer-linearity, sensitivity, and resolution What is the maximum readable length of deflection determined either by an electrical or physical limit in the A-scan presentation of an ultrasonic testing instrument? - answer-horizontal limit Instruments are horizontally linear if all the values are equal within... - answer-3.0 percent of the full-scale width Which reference blocks are used for the system sensitivity check? - answer-ASTM standard reference blocks Which type of frequency transducers are used for the back surface resolution control checks? - answer-2.25MHz or above The angle of new and used ultrasonic transducers should be maintained within how many degrees of what is required to perform an ultrasonic inspection? - answer-two Which process control has a mark on the side of the transducer indicating an imaginary line through the exit point of the beam that intersects the side of the wedge? - answer-angle beam point of incidence (POI) What is the adhesive in any lap joint assembly called? - answer-bond line Honeycomb core can be made of all of these except... - answer-steel What material is made of a fibrous material embedded in a resin matrix? - answer-composite materials What is an adhesive that bonds fibers to each other and gives side-to-side support? - answer-matrix What are the principle load-carrying components in bonded or composite structures? - answer-fibers Which fiber has high tensile and compression strength and lack of galvanic corrosion potential, which make it popular for repairs? - answer-boron Which of the following is true regarding reference standards? - answer-contain bonds of good quality except for controlled areas of unbond fabricated How thick are the discs of Teflon sheets that are placed over the adhesive areas of bonded standards for type I, II, III, and IV disbonds? - answer-0.006 inch Which inspection technique(s) are used for far side skin to core disbonds? - answer-through-transmission and MIA What is an area within a bonded interface between two adherents in which the intended bonding action failed to take a place called? - answer-unbond What uses laser-based imaging to detect, measure, and analyze surface and subsurface irregularities in materials or structures? - answer-shearography interferometry Shearography creates images showing the first derivative of the out-of-plane deformation of the test part surface in response to a change in load by using... - answer-cameras When visually assessing the integrity of bonds in honeycomb panels, what could indicate a delamination between sheets and core material? - answer-buckling or dents in the face or back sheet Which bond testing method finds voids of 1 1/2 inch diameter or larger in metal-to-metal, composite-to-metal, or thin facing-sheet honeycomb assemblies? - answer-tap testing All of these inspections utilize bond testing with an ultrasonic unit except... - answer-resonance Which bond testing method uses a delay line for beter near surface resolution? - answer-pulse-echo Which bond testing technique is based on absorption or energy loss in the bond line and core material? - answer-ringing Which bond testing method has a probe having mechanical lift-off adjustments that sets the air gap between the coil and the test surface to minimize the noise produced by probe scanning? - answer-eddy sonic How do you clean your bondmaster when the front panel becomes soiled? - answer-clean it with nonabrasive paper towels and isopropyl alcohol Excited electrons will surround a material in the form of an electron cloud commonly known as... - answer-thermionic emission What is the positive terminal of an x-ray tube? - answer-anode The type of process for when photons have energies of 100 kiloelectron-volt (keV) or less, and are readily absorbed by the electrons in the orbital shells of the atoms of the absorber, is referred to as... - answer-photoelectric absorption How much incident radiation should a subject being x-rayed absorb in order to achieve a high-contrast? - answer-96-99 percent What has a very important effect upon the quality of an x-ray image? - answer-size of the focal spot To the radiation beam, an open crack appears as... - answer-a significant change in material thickness What can be used as a recording medium because their emulsions are sensitive to the quantity and the energy of electromagnetic radiation over a wide spectral range? - answer-films What makes up the formation of latent images by interactions to electromagnetic radiation? - answer-silver bromide crystals Which class of radiographic film has a moderate signal-to-noise ratio? - answer-class 3 How is detail sensitivity of a radiographic image visually revealed? - answer-penetrameter holes What is exposure of film from scatter radiation called? - answer-fog Which of these materials cannot be used for thermoluminescent dosimeter (TLD) badges? - answer-silicon diode What should you do when a digital alarm dosimeter (DAD) is used by a different radiographer? - answer-reset it to zero When the effects of a given absorbed dose decreases, the rate of exposure... - answer-decreases Symptoms can be expected if the whole body is exposed to how much radiation within a period of a few hours to one day? - answer-100 roentgens A radiation safety officer (RSO) is normally appointed by whom? - answer-unit commander What form will be completed for all overexposures, shielded, and unshielded inspections? - answer-AFTO Form 125, industrial radiography utilization log An area that is considered to be very high in radiation, measured in radiation absorbed dosages (rad), is an area where an individual is - answer-3.3 feet from any source of radiation that could receive greater than 500 rads in one hour When unshielded radiographic operations are conducted for vertical beam orientation, you should erect a rope barrier around the x-ray tube head at what distance? - answer-230 feet When should radiographers verify proper operation of radiography interlocks? - answer-daily and prior to use When is the survey meter operational check performed? - answer-every 14 days or as recommended by manufacturer, and prior to use In order for a safelight to meet or exceed minimum requirements, the density change must be at least... - answer-4 minutes and 45 seconds How do you go about completing an operational check on the Victoreen survey meter? - answer-place a radioactive source material as close as possible to the white dot and maximize reading What type of safelight filter is the only model designated for use with industrial radiographic film? - answer-6B or equivalent When a new batch of developer is added, a strip of film should be checked after how many 14x17 inch pieces of film have been processed to compare the usefulness of the developer? - answer-50 Which type of silver recovery system sends electric current to the silver bearing fixer and the silver is electronically deposited upon the cathode and can be refined? - answer-electrolysis What type of casting defect may be less or more dense than the matrix alloy and will appear as a darker or lighter indication? - answer-inclusions What are often detectable in the direction of the thickness of a plate and will be parallel to the x-ray beam? - answer-cracks in welds What type of welding defect does not properly fuse with the base metal and appears as a dark line oriented in the direction of the weld seam? - answer-lack of fusion How does water in honeycomb cells usually appear on a radiograph? - answer-smooth, consistent with a light density area and no grainy appearance What allows us to retrieve information electronically for easy and accurate manipulation or analysis by a computer? - answer-digital imaging When the dynamic range is greater, the... - answer-higher the contrast and color/grayscale bit depth How should you care for image plates (IP)? - answer-wear cotton gloves to aid in keeping clean Which of these is not used to store digital radiographs? - answer-share drive What is defined in a digital image by the pixel it represents? - answer-brightness resolution What type of pixel can display 256 colors or grayscale levels at most? - answer-8 bit Who will approve all laser pointers prior to use? - answer-bioenvironmental engineering Computed radiography (CR) process controls are split into what four tests? - answer-display monitor, system, image plate, and EPS tests What acceptable criteria are you looking for during the display monitor process control test? - answer-verify no visible distortion of horizontal/vertical crosshatch test pattern During evalution of the spatial resolution evaluation, how far away from the display monitor shall operators be positioned? - answer-12-18 inches Apart from the magnification setting, what is the only item that may be adjusted during the laser jitter evaluation? - answer-brightness How is wear metal concentration measured? - answer-parts per million Sudden failures not preceded by characteristic wear metal generation, such as fatigue failure, is currently... - answer-undetectable, and known as a catastrophic failure The concentration of metals in fluid samples is measured by the... - answer-amount of light absorbed or emitted by the excited sample Spectroscopy relies on the... - answer-detection of persistent lines in a spectrum Which atomic emission group takes the light emitted during excitation and isolates or breaks it down into its spectral wavelengths for monitoring? - answer-optical processing What information is not provided in a scanning electron microscope/energy dispersive x-ray (SEM/EDX) report? - answer-a three-dimensional image What process includes the ability to generate three-dimensional images of metal particles? - answer-scanning electron microscope/energy dispersive x-ray (SEM/EDX) Scanning electron microscope/energy dispersive x-ray (SEM/EDX) technology is currently only used in nondestructive inspection (NDI) laboratories that support which aircraft? - answer-f-16 and u2 Which levels warning indicates that there is a significant amount of material detected and troubleshooting must be initiated? - answer-level 2 How should temperature and humidty be controlled in joint oil analysis program (JOAP) labs? - answer-75+/- 10 degrees Fahrenheit between 20 and 60 percent humidity The D3 standard contains approximately the same weight of which three elements? - answer-boron, molybdenum, and zinc Which diagnostic check is used to assure that the spectrometer has reached electronic stabilty? - answer-the dark current electronic stability test Ultimately, the responsibility to decide what action to take in regard to any recommendation from the joint oil analysis program (JOAP) laboratory rests with the... - answer-customer How often do you back up all assigned spectrometers? - answer-monthly What monthly correlation score must labs maintain to keep labs certified? - answer-80 percent or above Which is not a reason for a lab to become uncertified? - answer-upon direction of the JOAP lab supervisor Once a spectrometer in reported maintenance (RM) status has been repaired, you may analyze up to... - answer-two months of overdue correlation samples, with up to one overdue sample set for each workday How many anlysis burns are completed for the warm-up? - answer-three or four If your daily check fails, you should complete... - answer-a full standardization and then another daily standardization check What will you need to do every time a new batch and/or lot number of electrodes is used? - answer-electrode offset procedure How long will NDI laboratories keep a Department of Defense (DD) Form 2026 on file? - answer-90 days Which oil analysis program record is kept on file for 12 months? - answer-historical data form The hours of flight since oil change time is normally critical only during the... - answer-first 10-15 hours Which lab code recommends a "resample after *** hours; do not change oil"? - answer-code c What is relatively insensitive to test object bending or deformation due to the applied stress, but is still highly sensitive to local defect deformation? - answer-shearography When interpreting an image in shearography, what are you doing if you move a defect to the center of the field of view (FOV) and retest the test part? - answer-precisely measuring an indication Which of these does not act as an active thermographic excitation source? - answer-eddy current initiators Which material is tested by cooling instead of heating the surface in thermal shearography? - answer-kevlar What is the maximum possible scan speed in square feet per hour when using a mobile automated scanner system (MAUSS)? - answer-100 What is one line of magnetic force called? - answer-maxwell What instrument is used to transmit light in a curved path? - answer-fiberscope Which bond testing technique is based on the effect of vibrations under a load on the natural frequency of a transducer? - answer-resonance What ultrasonic control determines the amount of time or the depth of the material displayed on the cathode ray tube? - answer-sweep length or range Which measure is based on ionization in air? - answer-roentgen By applying geometric factors to your radiographic images, you are able to control distortion, sharpness, and degree of... - answer-enlargement What is the most commonly used material in metallic replacement silver recovery cartridges? - answer-steel wool What is the number of sound waves that pass a given point in a given time called? - answer-frequency What control would you use to change the display appearance or numerical parameters for a selected function on the Nortec 2000? - answer-smartknob In ultrasonic testing, what does the wave type or mode refer to? - answer-direction of particle motion What is the unit of measure of current? - answer-ampere What should you do when installing new electrodes into the spectrometer? - answer-install the disc electrode first What are wear metals? - answer-microscopic metal particles formed by friction What is the minimum number of analysis results that must be recorded on the DD Form 2026, Transit Aircraft Oil Analysis Record by the home station laboratory? - answer-three What is the minimum desired eddy current signal-to-noise ratio? - answer-three to one Energy produced when an electron replaces a dislodged electron is known as... - answer-characteristic radiation Which is not one of the three methods of removing accident causes? - answer-developing safe habits Electrons in atom are kept from being pulled to the nucleus by... - answer-centrifugal force What is the most probable cause for not receiving a return signal during pulse-echo testing? - answer-geometry of the part Which statement correctly states the relationship between wavelength, velocity, and frequency? - answer-the wavelength is equal to the velocity divided by the frequency What type of transducer would you use to ultrasonically inspect welds? - answer-an angle beam What type of radiographic film should show sharply graduated changes in density? - answer-film with high constrast The equation used to determine the frequency of electromagnetic rays divides... - answer-velocity of light by wavelength Which electron orbital shell is closer to the nucleus of an atom? - answer-k Where are the electrical connections on the X-ray tube head made? - answer-on the end opposite the target Which is not a sure example of an abnormal wear metal trend? - answer-concentration reading jumping from marginal to high level on the spectrometer Magneto optical inspection is able to image through paint and other surface coverings in or with... - answer-real time What do you call the number of lines of magnetic force per square centimeter in a plane perpendicular to the direction of the magnetic field? - answer-flux density The atomic number on an atom is determined by the number of... - answer-protons What is the function of the diaphragm in radiography? - answer-confines the primary beam What are the two parts of a sound wave? - answer-compression and rarefaction Waterlines are assigned along the... - answer-horizontal plane What are the building blocks of molecules? - answer-elements Where does beam spread occur? - answer-far field What form is posted at the entrance to an exposure room? - answer-AFTO Form 9 Which procedure is not a function of the end cap on a SM-400? - answer-allows adjustment of the zero adjust switch in an area with low radiation What is the simplest adhesive bonded structure? - answer-lap joint Which type of ultrasonic display has a baseline at 50 percent of full screen height and shows the full waveform with both positive and negative peaks? - answer-radio frequency, nonrectified Which ultrasonic method is most commonly used for thickness measurement? - answer-pulse-echo NDI techniques are classified as... - answer-directives What type of exposure should not be included in the determination of an individual's radiation exposure status? - answer-medical exposure Which geometric factor is not controllable by the operator? - answer-energy source size Why is it necessary to use a densitometer for making exposure corrections? - answer-to establish a starting density from which to correct In the past, during normal day to day operations, the primary method of detecting large particles was by visually inspecting the engine... - answer-master chip detector Which risk factor level warning indicates that there is a significant amount of material detected and troubleshooting must be inititated? - answer-level 2 What is the normal operating temperature of an automatic processing dryer? - answer-120 to 140 degrees Fahrenheit What SM-400 full-scale meter sensitivity ranges can be selected? - answer-3 mr/hr through 300 mr/hr Penetrant materials not centrally procured will be accepted and used when... - answer-the system performance test and material test report are satisfactory Isolation of individual component discrepancies by oil analysis is limited to cases where... - answer-abnormally high concentration of one wear metal element exists What do you call the adjustments you make to minimize the effect of eddy current probe proximity to the surface? - answer-liftoff Which wear metal element is not normally detected in an aircraft engine oil analysis program? - answer-cadmium Which office does not require a copy of the spectrometer deployment kit test analysis results? - answer-the home station laboratory Which level of maintenance would include routine inspections and servicing with fuel or oil? - answer-organizational Indications that are not significant are referred to as being... - answer-nonrelevant Which of the following is not an action of an alkaline cleaner? - answer-dissolving Using the inverse square law, what is the required distance to obtain i2 of 2 mr/hr if i1 = 100 mr/hr and D1 = 3 feet? - answer-21.2 feet In which component group of the atomic emission spectrometer are specific wavelengths of light isolated for monitoring? - answer-optical processing In advanced composite materials, which is not considered a matrix material? - answer-silicon In simplest basic eddy current instrument, analysis of the signal consists of measuring the change in relative magnitude of the current flowing through the... - answer-bridge circuit What feature do most stationary inspection units have to demagnetize parts? - answer-30-point step down What automated MDD system allows for point-of-maintenance input using portable maintenance aids? - answer-IMDS In which method are magnetic particles applied to a part after the magnetizing current is turned off? - answer-wet or dry residual What is the opposite film characteristic of contrast? - answer-latitude An X-ray film storage area should not exceed... - answer-60 percent humidity and 75 degrees Fahrenheit What determines the intensity of fluorescent light emitted by a fluorescent screen? - answer-intensity of incident radiation You would consider using an area-amplitude response when you are determining discontinuity... - answer-size A portable yoke produces what type of magnetic field? - answer-longitudinal field What reference governs the electrical safety requirements for using ultrasonic equipment around aircraft? - answer-AFOSH standards After how many burns cycles should you wipe clean the oil analysis spectrometer disc electrode shaft, sample table and the sample plate area between the disc electrode shaft and the rod electrode clamp? - answer-one What ultrasonic instrument feature is used to detect discontinuity signals within a specified zone of the sweep? - answer-flaw gate Which procedure should be performed monthly prior to analyzing correlation samples and recommended it be performed after the spectrometer has been subjected to a temperature change of 15 degrees Fahrenheit or more? - answer-optical profile When using ultrasonic inspection, where does an undesirable mode conversion occur? - answer-within the test specimen When performing an in-use bath check, what is the acceptable concentration range of wet fluorescent particles? - answer-0.1 to 0.4 ml/100 ml At which point of electron movement are X rays produced? - answer-each time an electron changes speed or direction What is the term for using family groups of penetrant materials from the same manufacturer? - answer-system concept The approximate operating voltage of an ionization chamber survey meter is... - answer-50 to 200 volts Which is a typical application using conductivity measurement? - answer-inspecting for changes in metal property A scan speed of up to how many square feet per hour are possible when using a mobile automated scanner system (MAUSS) inspection system? - answer-100 What type of defect is normally distinguished by a dark continuous jagged or straight line throughout its length on a radiograph? - answer-crack Which discontinuity appears as a dark irregular line offset from the centerline of the weldment? - answer-undercutting