Corrosion Exam Questions With 100% Correct Answers 2023-2024, Exams of Advanced Education

Download Corrosion Exam Questions With 100% Correct Answers 2023-2024 and more Exams Advanced Education in PDF only on Docsity!

Corrosion Exam Questions With 100%

Correct Answers 2023-

The prevention and control of corrosion on aircraft is whose responsibility? - Correct Answer-Command Which of the following is a part of a disciplined preventive maintenance program? - Correct Answer-Keeping low-point drains open Which of the following is the primary reason aircraft should be cleaned regularly? - Correct Answer-Allow for a thorough inspection MIL-PRF-85570, Type IV is recommended for cleaning which of the following? - Correct Answer-Exhaust tracks and gun blast deposits The first step when operating the portable 15 gallon foam generating cleaning unit is to do which of the following? - Correct Answer-Release the pressure. The proper pressure for the air regulator when operating the portable 45 gallon foam generating cleaning unit is between _____ psi. - Correct Answer-30- Which of the following requires approximately 14 cfm of air at 50 psi to siphon solvent or cleaner from a container? - Correct Answer-Spray cleaning gun Which of the following must be operated in the horizontal position? - Correct Answer- Universal washer unit Put the steps for cleaning preparation in the correct sequence. - Correct Answer- 1.Apply pre-wash lubrication. 2.Inspect for water or cleaning compound intrusion.3.Cover vents, openings, and ports. Which of the following should be used prior to lubricating any components or parts to remove any foreign matter from joints, fittings, and bearing surfaces? - Correct Answer- Non-woven cleaning cloth The preferred method is _____________ when fresh water is available for rinsing purposes. - Correct Answer-Detergent cleaning Routine scheduled cleaning should not be performed at temperatures below how many degrees Fahrenheit? - Correct Answer- When performing the post-cleaning procedures, which of the following is used to remove all tape adhesive residues? - Correct Answer-MIL-PRF-680, Type II

Which of the following is the first step in the post-cleaning procedures? - Correct Answer-Remove covers and masking tape. Aircraft wash rack cleaning waste shall receive the equivalent of what type of sewage treatment? - Correct Answer-Secondary If your wash rack is a source of hazardous waste, which of the following should you contact to determine corrective action? - Correct Answer-Base safety Which type of lubricant prevents galvanic corrosion coupling on close tolerance fittings and reduces fretting? - Correct Answer-MIL-L- Which of the following can be used to apply lubricants? - Correct Answer-Grease gun, lever type When applying lubricants through pressure type fittings with a grease gun, clean grease fitting with which of the following and a cleaning cloth before applying lubricant? - Correct Answer-MIL-PRF-680, Class C Which of the following is used to protect metal aircraft parts and components by preventing corrosive materials from contacting and corroding bare metal surfaces? - Correct Answer-Corrosion preventive compound Which of the following is a water displacing corrosion preventive compound which forms a clear, dry, flexible film? - Correct Answer-MIL-C- Daily cleaning or wipe down is required on all exposed, unpainted surfaces when deployed within how many miles of salt water and when flown below 3000 feet over salt water? - Correct Answer- Highly alkaline cleaning compounds, with a pH greater than _____, are not authorized for Navy aircraft. - Correct Answer- Which of the following is essential to the overall corrosion control program? - Correct Answer-Frequent corrosion inspections Who is responsible for an effective preventive maintenance program? - Correct Answer- All maintenance personnel During scheduled or unscheduled maintenance actions on aviation equipment or components, the area involved as well as those within what distance of the repair or treatment area must be visually inspected for corrosion? - Correct Answer-36 inches Put the steps for performing a general inspection of aviation equipment in the correct sequence. - Correct Answer-1.Clean the area thoroughly. 2.Examine the area. 3.Remove corrosion.

What does fluorescent penetrant inspection detect? - Correct Answer-Stress corrosion cracking Put the steps for performing an evaluation of corrosion damage in the correct sequence.

• Correct Answer- Put the steps for performing an evaluation of corrosion damage in the correct sequence.
• Correct Answer-1.Determine if corrosion is in an area that has been previously reworked. 2. Measure the damage. 3.Use a straight edge and a 10X magnifying glass to inspect the area suspected of being previously reworked. 4.Evaluate the depth of the previous rework. When evaluating corrosion damage, a straight edge and what type of magnifying glass may be used to assist in determining if an area has previously been reworked? - Correct Answer-10X What are the categories used for reporting degrees of corrosion? (Select all that apply.)
• Correct Answer-Light,moderate,severe What is the maximum depth that light corrosion is discolored and pitted? - Correct Answer-One mil (0.001 inch) Corrosion in faying surfaces, seams, and joints is usually detectable by which of the following? - Correct Answer-Bulging on the skin surface Which type of hinges are especially vulnerable to corrosion? - Correct Answer-Piano Paint removal by scuff sanding must not go beyond the primer coat, since complete removal of the paint can damage fibers in the surface layers of which of the following? - Correct Answer-Composite materials Due to the irregularities in composite surfaces, complete removal of the paint can damage which of the following in the surface layers? - Correct Answer-Fibers Which paint removal would you use for areas of several square inches or less? - Correct Answer-Abrasive mat Failure to remove all the corrosion may allow the corrosion to continue after affected surfaces are which of the following? - Correct Answer-Refinished Match the scraper to the metals it is used for removing corrosion. - Correct Answer- Plastic scrapers are used on any metal surfaces, aluminum scrapers are used on aluminum and magnesium surfaces, and steel scrapers are used on steel surfaces.

What should you use to prepare the surface of water sensitive areas? - Correct Answer- Approved cleaning solvent Chemical prepaint treatments are also known as which of the following? - Correct Answer-Chemical films Chromic acid (Form II powder) is a strong oxidizer and may ignite on contact with organic materials and which of the following? - Correct Answer-Reducing agents What should you do if chemical prepaint treatments accidentally contact the skin or eyes? - Correct Answer-Flush immediately with plenty of clean water. Where should mixing of a chemical prepaint treatment be done, so as to avoid breathing toxic vapors? - Correct Answer-A well ventilated area Which of the following factors may require more drying time for chemical conversion coatings? - Correct Answer-Low temperature With what must the prepared surface be cleaned if it is allowed to become dirty or is scratched? - Correct Answer-Wet abrasive mat Under which conditions should you apply corrosion preventive compounds? - Correct Answer-Operations will not permit the use of the corrosion treatment methods. What is the primary purpose of sealants? - Correct Answer-To prevent the intrusion of moisture Sealants are used on battery compartments and relief tanks for which of the following reasons? - Correct Answer-Acid resistance Which of the following generally consists of one component, which cures by reacting with moisture in the air? - Correct Answer-MIL-A- How long may it take to achieve a full cure for sealing compounds? - Correct Answer- days The application life of a sealant is the length of time that a mixed sealing compound remains usable at 75° Fahrenheit and how much relative humidity? - Correct Answer- 50% An increase of how much temperature above 75° Fahrenheit is necessary to cut the application time by approximately half? - Correct Answer-18° What should you do with the sealant kit if the working time is not suitable for the intended purpose? - Correct Answer-Dispose of the kit.

Why should care be taken when using rivet nozzles? - Correct Answer-To prevent sealant material from filling fastener holes Which style of semkit holds proportioned amounts of the two components separated by an aluminum barrier? - Correct Answer-Barrier style Which of the following is an example of a fairing or smoothing tool for working sealants and adhesives into seams? - Correct Answer-Spatula Which kind of sealant smoothing tools may be manufactured as needed to fit a specific situation? - Correct Answer-Plastic Which of the following sealants is non-toxic? - Correct Answer-ePTFE sealing tapes RTV silicone adhesive/sealants conforming to MIL-A-46106 emit acetic acid and, therefore, are which of the following? - Correct Answer-Corrosive Which type of brush should you use to clean around bolts, rivets, or other hard to reach areas? - Correct Answer-Stiff bristle When applying sealants, what should you not allow to happen to the solvent, because it will allow some or all of the oil and dirt to redeposit, making it impossible to be removed with a dry cloth? - Correct Answer-Evaporate For how much of its original shelf life can a batch of sealant be extended if it achieves approximately the same hardness as sealant from kits that are not over aged? - Correct Answer-One-half In general, store paint materials between _____ and 100 degrees Fahrenheit? - Correct Answer- If during a test of paint material the material dries properly, the shelf life may be extended for how long? - Correct Answer-6 months The primary purpose of any paint system is the protection against which of the following and other forms of deterioration? - Correct Answer-Corrosion Which of the following would be considered an operational use for painting? - Correct Answer-For camouflage FED-STD-595 (color fandeck) provides a list of paint colors represented in five digit numbers. Match the description to the number which represents that description. - Correct Answer-First digit: Gloss value Second digit: Color Remaining three digits: Color value or hue

How long may it take to achieve a full cure for sealing compounds? - Correct Answer- days Electrostatic painting is useful for painting small areas and produces _____ overspray with _____ transfer efficiency. - Correct Answer-Little, high Brushes and rollers are _____ for touch-up painting. - Correct Answer-Alternatives Paint equipment shall be thoroughly cleaned immediately after use or at least every how many hours? - Correct Answer- Which of the following is true of using paint equipment? - Correct Answer-Do not allow water to remain in the equipment. Which of these is true concerning surface preparation? - Correct Answer-Abrasion of substrate materials during surface preparation can damage structural integrity. How should unevenly etched faying surface joints or fasteners and sharply protruding objects or corners be scuff sanded? - Correct Answer-By hand All aircraft shall be _____ during all painting procedures in order to guard against the danger of fire from static electricity. - Correct Answer-Grounded The epoxy paint system consists of which of the following and a compatible topcoat? - Correct Answer-Primer MIL-PRF-81352, Type I, acrylic lacquer coating can be used for application of/on which of the following where environmental regulations permit? - Correct Answer-Temporary markings What is the health hazard while breathing the vapors from organic solvents? - Correct Answer-Dangerous All permanent structures shall be installed with MIL-PRF-81733 sealant at which of the following surfaces? - Correct Answer-Faying All removable structures shall be installed at the faying surfaces with which type of sealant? - Correct Answer-Class B All rivets shall be installed wet with MIL-PRF-81733 sealant, except those located where? - Correct Answer-In fuel contact areas Which method should be used for applying corrosion preventive compound to interior surfaces of tubing closed by welded end plugs or components? - Correct Answer-Fill and drain method

Where is the source for water intrusion found on cases and covers? - Correct Answer- Lead-in attachment points With how many coats of epoxy primer should electrical conduit (exterior) and junction boxes (interior and exterior) be coated to electrically insulate them? - Correct Answer- Two Which compound is used to prevent corrosion on pin and/or pin receptacle end of connectors? - Correct Answer-MIL-C- To prevent malfunctions caused by EMI, what must be either built into the avionic device or added to access panels and doors? - Correct Answer-Electrically conductive shielding As a general rule, grease shall not be applied to rubber parts, but some parts require a grease coating. Which of the following is one of those parts? - Correct Answer-O rings With respect to depleted uranium counterweights, if corrosion occurs, what should you apply to prevent further corrosion? - Correct Answer-AMLGUARD What should you not do to depleted uranium under any circumstances? - Correct Answer-Sand Which of the following best represents the mixture ratio of isopropyl alcohol and distilled water used to clean battery compartments? - Correct Answer-70% Alcohol, 30% Water How often should interior and exterior relief tube areas be inspected and cleaned? - Correct Answer-After each flight If the surface of a steel cable is corroded, how should you relieve cable tension and force the cable open to inspect it? - Correct Answer-Reverse twisting What should you always use on bare cadmium plating to prevent corrosion? - Correct Answer-A paint system What is the main purpose of emergency preparations? - Correct Answer-Prevent further damage. Under emergency conditions, who is responsible for minimizing damage? - Correct Answer-All hands Which of these is a true statement concerning priority removal? - Correct Answer- Priority removal shall always be oriented toward salvageable equipment.

Before starting emergency treatment, it is imperative that which of the following supervise purging or inerting procedures and certify that the aircraft is fire and explosion safe? - Correct Answer-Gas Free Engineer (GFE) Components that are removed from the aircraft are tagged for identification purposes. When tagging components, make sure to indicate which of the following? - Correct Answer-Preservation method If fresh water is not available for general cleaning, it is preferred you do which of the following? - Correct Answer-Spray the affected area with MIL-C-81309, Type II. If there are residues left from the use of protein foam (MIL-F-24385), what shall you do first? - Correct Answer-Rinse the area with fresh water. Which of the following is the first step for cleaning ejection seats? - Correct Answer- Disarm the ejection seat. When cleaning photographic equipment, first do which of the following? - Correct Answer-Rinse with fresh water. Rotor heads are often constructed of which of the following and require immediate decontamination and preservation? - Correct Answer-Magnesium After rinsing a rotor blade with fresh water, wash the affected area with a solution of one part aircraft cleaning compound in how many parts fresh water? - Correct Answer-Nine