2A753 EOC Exam Pretest

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  • 1/393 Questions

    (014) A metal that can be hammered, rolled, or pressed into various shapes without breaking has a high degree of

    • Malleability
    • Elasticity
    • Ductility
    • Density
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2A753 EOC Exam Pretest - Quiz
About This Quiz

The 2A753 EOC Exam Pretest evaluates knowledge on specific metalworking tools. It covers the use of different hammers and punches, marking tools, and methods to measure corrosion depth, essential for precision in metalworking.

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  • 2. 

    (014) What metal property is defined as the resistance to a cutting action like the cutting done by a pair of scissors?

    • Shear strength

    • Tensile strength

    • Torsional strength

    • Compressive strength.

    Correct Answer
    A. Shear strength
    Explanation
    Shear strength is the correct answer because it refers to the resistance of a material to a cutting or shearing action. It measures how well a material can withstand forces that are applied parallel to its surface, such as when a pair of scissors cuts through a material. Tensile strength, torsional strength, and compressive strength are not specifically related to cutting actions and therefore are not the correct answers.

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  • 3. 

    (226) What do you do with jelled or lumpy coating materials?

    • Discard them at once

    • Thin with solvent and strain prior to use

    • Agitate with mechanical mixer prior to use

    • Dissolve jelled areas or lumps with thinner prior to use

    Correct Answer
    A. Discard them at once
    Explanation
    When coating materials become jelled or lumpy, it indicates that they have gone bad or have been contaminated. Using such materials can result in an uneven or poor quality coating. Therefore, it is best to discard them immediately to ensure a smooth and satisfactory finish.

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  • 4. 

    (228) What is used to wipe down the aircraft surface before applying rain erosion resistant tape?

    • Isopropyl alcohol

    • Ethylene glycol

    • Aliphatic naptha

    • Methyl ethyl ketone

    Correct Answer
    A. Isopropyl alcohol
    Explanation
    Isopropyl alcohol is used to wipe down the aircraft surface before applying rain erosion resistant tape. This is because isopropyl alcohol is a common solvent that is effective in removing dirt, grease, and other contaminants from surfaces. By using isopropyl alcohol to clean the aircraft surface, it ensures that the tape adheres properly and provides the desired level of protection against rain erosion. Ethylene glycol, aliphatic naptha, and methyl ethyl ketone are not typically used for this purpose.

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  • 5. 

    (608) When fabricating a doubler for a flush skin repair in an open area

    • Select material that is one-gage thicker than the skin

    • Position the doubler material inside the cutout

    • Develop a fastener layout on the patch plate

    • Split the doubler into two parts.

    Correct Answer
    A. Select material that is one-gage thicker than the skin
    Explanation
    When fabricating a doubler for a flush skin repair in an open area, it is important to select material that is one-gage thicker than the skin. This is because the doubler is meant to reinforce the damaged or weakened area of the skin, and using a thicker material will provide additional strength and support. By selecting a material that is one-gage thicker, it ensures that the doubler will effectively reinforce the skin and prevent further damage or failure.

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  • 6. 

    (612) What cardinal rule must be followed when removing damage from a composite structure?

    • Remove a minimum of sound material

    • Make the cutout to a round configuration

    • Use the scarf method to make an oval cutout

    • Use the step-joint method to make a square cutout

    Correct Answer
    A. Remove a minimum of sound material
    Explanation
    When removing damage from a composite structure, it is important to remove as little sound material as possible. This means that only the damaged area should be removed, while preserving the surrounding undamaged material. This helps maintain the structural integrity of the composite structure and ensures that it can continue to perform its intended function effectively.

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  • 7. 

    (002)what layout tool do you use to mark cut lines on metal surfaces?

    • Scriber

    • Dividers

    • Prick punch

    • Layout punch

    Correct Answer
    A. Scriber
    Explanation
    A scriber is a layout tool commonly used to mark cut lines on metal surfaces. It has a sharp point that can be used to scratch or etch lines onto the metal, making it easier to accurately cut or shape the material. Unlike dividers, prick punch, or layout punch, a scriber is specifically designed for marking lines on metal surfaces.

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  • 8. 

    008 when using a micro-shaver,you set it how many thousands of an inch above the skin?

    • .002"

    • .004"

    • .006"

    • .008"

    Correct Answer
    A. .002"
    Explanation
    When using a micro-shaver, it is set .002" above the skin. This means that the shaver is positioned at a height of two thousandths of an inch above the surface of the skin. This distance ensures that the shaver does not cut too close to the skin, preventing any potential cuts or irritations.

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  • 9. 

    (221) What will happen to the paint coating if you hold a spray gun too close to the surface during painting operations?

    • Fish-eyes.

    • Runs and sags.

    • Blushing of pigment

    • Uneven flow-out of coating.

    Correct Answer
    A. Runs and sags.
    Explanation
    If you hold a spray gun too close to the surface during painting operations, the paint coating will experience runs and sags. This occurs because the excessive amount of paint being sprayed in a concentrated area causes it to accumulate and drip, resulting in uneven and sagging coverage.

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  • 10. 

    (005) To use the job selector dial on a contour metal cutting saw you must know the

    • Type blade already installed

    • Material composition and thickness.

    • Pitch of the material being cut based on thickness

    • Degree the material being cut placed in relationship to the blade.

    Correct Answer
    A. Material composition and thickness.
    Explanation
    To use the job selector dial on a contour metal cutting saw, you need to know the material composition and thickness. The job selector dial is used to adjust the cutting speed and feed rate of the saw based on the specific material being cut. Different materials have different hardness and cutting characteristics, so it is important to know the composition and thickness in order to set the appropriate parameters on the saw.

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  • 11. 

    007 The flutes on twist drill are necessary because they

    • Provides a means of chip removal.

    • Cool the material being drilled as the twist drill is rotated.

    • Reduce the weight of the twist drill,permitting higher cutting speeds.

    • Prevent the twist drill from cooling too quickly,which may cause the wist drill to crack.

    Correct Answer
    A. Provides a means of chip removal.
    Explanation
    The flutes on a twist drill are necessary because they provide a means of chip removal. As the drill rotates, the flutes help to lift and remove the chips or debris that are generated during the drilling process. Without the flutes, the chips would get stuck in the hole, causing the drill to become ineffective. Therefore, the flutes play a crucial role in ensuring efficient chip removal and maintaining the drilling performance of the twist drill.

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  • 12. 

    (214) When should you apply chemical conversion coating to metal?

    • Immediately after cleaning a water break-free surface.

    • Immediately after corrosion removal procedures.

    • During corrosion removal procedures.

    • Whenever it is convenient.

    Correct Answer
    A. Immediately after cleaning a water break-free surface.
    Explanation
    Chemical conversion coating is a process that helps protect metal surfaces from corrosion. It involves applying a chemical solution to the metal, which forms a protective layer on the surface. The correct answer states that chemical conversion coating should be applied immediately after cleaning a water break-free surface. This is because any presence of water or moisture on the surface can interfere with the effectiveness of the coating process. Therefore, it is important to ensure that the surface is completely dry and free from water before applying the chemical conversion coating.

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  • 13. 

    (216) At a minimum, material data safety sheets (MSDS) are made available to

    • Everyone

    • Shop chiefs

    • Shift supervisors

    • Immediate supervisors

    Correct Answer
    A. Everyone
    Explanation
    Material data safety sheets (MSDS) contain important information about the hazards, handling, and emergency procedures related to a particular material. Making them available to everyone ensures that everyone in the organization has access to this crucial information, regardless of their position or level of responsibility. This promotes a culture of safety and ensures that all individuals are equipped with the necessary knowledge to handle materials safely and respond appropriately in case of emergencies.

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  • 14. 

    (602) What symbol do you enter on the Air Force Technical Order (AFTO) Form 781A when an aircraft is considered unsafe or unfit for flight?

    • Red X.

    • Red Plus

    • Red Dash

    • Red Diagonal

    Correct Answer
    A. Red X.
    Explanation
    The correct symbol to enter on the Air Force Technical Order (AFTO) Form 781A when an aircraft is considered unsafe or unfit for flight is the Red X. This symbol is used to indicate that the aircraft is grounded and should not be flown until the necessary repairs or maintenance have been completed.

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  • 15. 

    (403) Which nut is used where the assembly is frequently removed and you can obtain the desired tightness with your fingers?

    • Wing

    • Castle

    • Plain text

    • Catellated shear

    Correct Answer
    A. Wing
    Explanation
    The wing nut is used in assemblies where frequent removal is required and the desired tightness can be achieved by using fingers. Wing nuts have two large wings on opposite sides that allow for easy gripping and turning by hand, eliminating the need for tools. This makes them convenient for applications where quick and easy adjustments or disassembly are necessary.

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  • 16. 

    (619) How do you determine if water has been removed or has migrated to another location when removing moisture from a honeycomb composite panel?

    • Use a tap hammer

    • Visually inspect area

    • Re-inspect area using a borescope

    • Re-inspect area using nondestructive inspection (NDI).

    Correct Answer
    A. Re-inspect area using nondestructive inspection (NDI).
    Explanation
    To determine if water has been removed or has migrated to another location when removing moisture from a honeycomb composite panel, the best option is to re-inspect the area using nondestructive inspection (NDI). NDI techniques, such as thermal imaging or moisture meters, can detect the presence and distribution of moisture without causing any damage to the panel. This allows for a thorough and accurate assessment of the moisture content and its location within the panel. Using a tap hammer or visually inspecting the area may not provide sufficient information to determine the moisture status accurately. A borescope can provide a closer look, but it may still not be as effective as NDI in detecting moisture.

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  • 17. 

    (002) What is used to determine the depth of a corrosion  pit?

    • Magnifying glass

    • Straight edge

    • Depth gauge

    • Scriber

    Correct Answer
    A. Depth gauge
    Explanation
    A depth gauge is used to determine the depth of a corrosion pit. This tool allows for accurate measurement of the depth of the pit, which is important in assessing the severity of the corrosion and determining appropriate treatment or repair methods. A magnifying glass may be used to visually inspect the pit, but it cannot provide precise depth measurements. A straight edge and scribe may be used to mark the boundaries of the pit, but they do not directly measure its depth.

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  • 18. 

    (002) The unit of measure used with a scale is the?

    • Gram

    • Pound

    • Ounce

    • Kilogram

    Correct Answer
    A. Gram
    Explanation
    A scale is a device used to measure the weight or mass of an object. The unit of measure commonly used with a scale is the gram. Gram is a metric unit of weight or mass, and it is widely used in scientific and everyday measurements. It is a smaller unit compared to pound, ounce, and kilogram, making it more suitable for precise measurements that scales are typically used for.

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  • 19. 

    (003)what is the best file to use on a concave surface?

    • Combination

    • Double-cut

    • Half-round

    • Single-cut

    Correct Answer
    A. Half-round
    Explanation
    The best file to use on a concave surface is a half-round file. This type of file has a curved shape with one flat side and one rounded side, allowing it to smoothly and accurately shape concave surfaces. The combination file has both flat and rounded surfaces, making it versatile but not specifically designed for concave surfaces. The double-cut file has two sets of diagonal teeth, providing a rougher and faster cutting action, but it may not be as precise on concave surfaces. The single-cut file has one set of diagonal teeth and is better suited for flat surfaces rather than concave ones.

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  • 20. 

    009 What adjustment is required when the bar folder does not operate freely?

    • Thickness

    • Radius

    • Width

    • Angle

    Correct Answer
    A. Thickness
    Explanation
    When the bar folder does not operate freely, the most likely adjustment that needs to be made is the thickness. If the bar folder is not operating smoothly, it could be because the material being folded is too thick for the machine to handle. Adjusting the thickness setting can help ensure that the bar folder can operate freely and effectively fold the material without any issues.

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  • 21. 

    (016) If you had to select an aluminum alloy that is high in strength without a substantial loss in workability, which alloy should you select?

    • 1000

    • 1100

    • 3003

    • 5052

    Correct Answer
    A. 5052
    Explanation
    5052 is the correct answer because it is an aluminum alloy that is known for its high strength and good workability. It has excellent corrosion resistance and is often used in applications where strength is important, such as in the construction industry. Additionally, 5052 can be easily formed, welded, and machined, making it a versatile choice for various manufacturing processes.

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  • 22. 

    (218) The type of chemical remover to be used depends on the

    • Barometric pressure during removal procedures.

    • Type of organic finish system to be removed.

    • Color of the finish system to be removed.

    • Humidity during removal procedures.

    Correct Answer
    A. Type of organic finish system to be removed.
    Explanation
    The correct answer is "type of organic finish system to be removed." This means that the choice of chemical remover depends on the specific type of organic finish system that needs to be removed. Different types of finish systems may require different chemical removers in order to effectively and safely remove them. Therefore, understanding the type of organic finish system is crucial in selecting the appropriate chemical remover for the removal process.

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  • 23. 

    (220) When using the plastic media blasting (PMB) cabinet blaster, check the media level

    • Prior to use.

    • During use

    • Immediately after use

    • 5–10 minutes after use allowing the media settle.

    Correct Answer
    A. Prior to use.
    Explanation
    The correct answer is "prior to use." When using the plastic media blasting (PMB) cabinet blaster, it is important to check the media level before starting to ensure that there is enough media for the blasting process. This step helps to prevent any interruptions or delays during the blasting operation and ensures that the blaster has an adequate supply of media to effectively remove the desired material. Checking the media level prior to use also allows for any necessary adjustments or refills to be made before starting the blasting process.

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  • 24. 

    (602) When a new Air Force Technical Order (AFTO) Form 781A is initiated, what kind of discrepancies must not be transferred to the AFTO Form 781K?

    • Red X.

    • Red Dash

    • Red Diagonal

    • Discrepancies with a supply document number

    Correct Answer
    A. Red X.
    Explanation
    When a new Air Force Technical Order (AFTO) Form 781A is initiated, discrepancies with a Red X must not be transferred to the AFTO Form 781K. A Red X indicates a condition that is considered unsafe or unfit for flight and requires immediate action to correct. Therefore, it is important to address and resolve these discrepancies separately from other types of discrepancies recorded on the AFTO Form 781A.

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  • 25. 

    (605) According to the basic principle of repair, when you make any repair your main concern is the original

    • Strength.

    • Contour.

    • Stresses.

    • Weight.

    Correct Answer
    A. Strength.
    Explanation
    When making a repair, the main concern is to restore the original strength of the object or structure. This means ensuring that the repaired area is able to withstand the same amount of force or stress as it did before it was damaged. The repair should reinforce the structure and make it as strong as it was originally, preventing any further damage or weakening.

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  • 26. 

    (609) Before applying an aerodynamic smoothing compound to repair seams

    • Smooth the edges with sandpaper

    • Clean the area with distilled water

    • Smooth the edges with a rotary file.

    • Clean the area with an approved solvent

    Correct Answer
    A. Clean the area with an approved solvent
    Explanation
    Before applying an aerodynamic smoothing compound to repair seams, it is necessary to clean the area with an approved solvent. This is important because the solvent will remove any dirt, grease, or other contaminants that may be present on the surface. Cleaning the area ensures that the smoothing compound will adhere properly and provide a smooth finish. Sandpaper and a rotary file are mentioned in the options, but they are not the correct steps to take before applying the smoothing compound.

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  • 27. 

    (615) When storing advanced composite materials in cold storage, what is the maximum temperature permitted?

    • 0ºF

    • 32ºF

    • 60ºF

    • 72ºF

    Correct Answer
    A. 0ºF
    Explanation
    Advanced composite materials are known to be sensitive to temperature changes, especially high temperatures. Storing these materials in cold storage is necessary to maintain their integrity and prevent any damage. The maximum temperature permitted for storing advanced composite materials in cold storage is 0ºF. This extremely low temperature ensures that the materials remain stable and do not undergo any undesirable changes or degradation.

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  • 28. 

    (622) What should you do to an aircraft panel before you fine finish the edges?

    • Alodine the panel.

    • Fit test the panel

    • Prime the panel

    • Paint the panel

    Correct Answer
    A. Fit test the panel
    Explanation
    Before fine finishing the edges of an aircraft panel, it is important to fit test the panel. This involves checking the panel for proper alignment and fit before proceeding with any further finishing processes. Fit testing ensures that the panel is correctly positioned and secured, allowing for a precise and accurate finish. It helps to identify any potential issues or adjustments that may need to be made before proceeding with the final finishing steps.

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  • 29. 

    (625) To clean dirt and grease from a surface to be sealed, you use

    • Soapy water

    • Alkaline cleaner

    • An approved solvent/cleaner

    • A high pressure water blaster.

    Correct Answer
    A. An approved solvent/cleaner
    Explanation
    To clean dirt and grease from a surface to be sealed, using an approved solvent/cleaner is the best option. This is because an approved solvent/cleaner is specifically designed to effectively remove dirt and grease without causing any damage to the surface. Soapy water may not be strong enough to remove stubborn dirt and grease, while an alkaline cleaner or a high pressure water blaster may be too harsh and can potentially damage the surface. Therefore, using an approved solvent/cleaner ensures both effective cleaning and protection of the surface to be sealed.

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  • 30. 

    009 You can from a conical shape with the slip roll former by

    • Setting the back roller at an angle.

    • Using the grooved portion of the rolls.

    • Feeding the metal through the roller at an angle.

    • Reversing the metal after each pass thru the rollers

    Correct Answer
    A. Setting the back roller at an angle.
    Explanation
    By setting the back roller at an angle, you can form a conical shape with the slip roll former. This is because adjusting the angle of the back roller allows the metal to be bent and shaped into a conical form as it passes through the rolls. The angle of the back roller determines the angle at which the metal is bent, resulting in the desired conical shape.

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  • 31. 

    (013) What Air Force Technical Order (AFTO) form is used to document equipment maintenance?

    • Form 196, Equipment Record.

    • Form 227, Equipment Maintenance.

    • Form 244, Industrial/Support Equipment Record.

    • Form 260, Equipment Discrepancies.

    Correct Answer
    A. Form 244, Industrial/Support Equipment Record.
    Explanation
    The correct answer is Form 244, Industrial/Support Equipment Record. This form is used to document equipment maintenance in the Air Force. It is specifically designed for industrial and support equipment, allowing technicians to record and track maintenance activities, repairs, and inspections. This form helps ensure that equipment is properly maintained and in working order, which is crucial for the Air Force's operational readiness and mission success.

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  • 32. 

    (014) The relationship between the strength of a material and its weight per cubic inch is the

    • Strength/weight ratio.

    • Tensile strength

    • Shear strength

    • Density.

    Correct Answer
    A. Strength/weight ratio.
    Explanation
    The relationship between the strength of a material and its weight per cubic inch is commonly referred to as the strength/weight ratio. This ratio allows us to compare the strength of different materials while taking into account their weight. By dividing the strength of a material by its weight, we can determine how strong the material is relative to its weight. This is an important factor to consider when designing structures or choosing materials for specific applications, as it helps determine the efficiency and effectiveness of the material in terms of strength and weight.

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  • 33. 

    (027) Angles less than (<) 90° are defined as

    • Obtuse

    • Acute

    • Right

    • Left

    Correct Answer
    A. Acute
    Explanation
    Angles less than 90° are defined as acute.

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  • 34. 

    (415) Gaps are permitted between a mechanical-lock blind rivet and the surface provided they meet which specifications?

    • Work-center standards

    • Local regulations

    • Technical orders

    • Vendor catalog

    Correct Answer
    A. Technical orders
    Explanation
    Technical orders provide specifications and guidelines for various aspects of a mechanical-lock blind rivet, including the permissible gaps between the rivet and the surface. These orders are specific to the equipment or system being used and ensure that the rivet is installed correctly and meets the required standards. Work-center standards, local regulations, and vendor catalogs may provide general information but may not specifically address the permissible gaps for this particular type of rivet.

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  • 35. 

    (429) To inspect the ring position of a swaged Permalite (Deutschlite) fitting, you use

    • An inspection gage

    • An inside micrometer.

    • An outside micrometer

    • A locally manufactured tool

    Correct Answer
    A. An inspection gage
    Explanation
    An inspection gage is used to inspect the ring position of a swaged Permalite (Deutschlite) fitting. This tool is specifically designed for this purpose and allows for accurate measurement and assessment of the ring position. An inside or outside micrometer may not be suitable for this task as they are not specifically designed for inspecting ring positions. Similarly, a locally manufactured tool may not have the necessary precision and accuracy required for this inspection.

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  • 36. 

    (617) When making a step-joint repair to an aramid honeycomb composite panel, you make the replacement plies

    • At right angles to each ply in the original panel

    • To match each ply in the original panel

    • At 30° to each ply in the original panel.

    • At 45° to each ply in the original panel

    Correct Answer
    A. To match each ply in the original panel
    Explanation
    When making a step-joint repair to an aramid honeycomb composite panel, it is important to make the replacement plies to match each ply in the original panel. This ensures that the repaired section is structurally consistent with the rest of the panel, maintaining its strength and integrity. By matching the orientation of each ply, the repaired area will have the same load-bearing capabilities and mechanical properties as the original panel, resulting in a successful repair.

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  • 37. 

    You can ensure a reciprocating saw is cutting properly by selecting a blade

    • Thinner than the thickness of the material being cut.

    • Pitch where at least two teeth will cut at all times.

    • Equal to the thickness of the material being cut .

    • Where five teeth cut simultaneously.

    Correct Answer
    A. Pitch where at least two teeth will cut at all times.
    Explanation
    To ensure a reciprocating saw is cutting properly, it is important to select a blade with a pitch where at least two teeth will cut at all times. This ensures that there is enough contact between the blade and the material being cut, providing efficient and effective cutting action. If the pitch is too wide, only one tooth may be in contact with the material at a time, resulting in slower and less accurate cutting. Therefore, selecting a blade with the appropriate pitch is crucial for optimal cutting performance.

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  • 38. 

    (022) How is a metal-bonded honeycomb panel constructed?

    • A core bonded between two metal facings.

    • A core bonded between two layers of glass.

    • Two sheets of non alloyed aluminum metal separated by a core.

    • Two layers of similar metals separated by a piece of glass cloth laminate.

    Correct Answer
    A. A core bonded between two metal facings.
    Explanation
    A metal-bonded honeycomb panel is constructed by bonding a core between two metal facings. This means that there is a central core material, which is typically made of a honeycomb structure, and it is sandwiched between two metal sheets. This construction provides strength and rigidity to the panel while also keeping it lightweight. The metal facings protect the core and provide a smooth and durable surface for the panel.

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  • 39. 

    (209) Which scale is used to measure the strength of an electrolyte?

    • Vernier

    • Electrical

    • Concentration

    • Potential of hydrogen (pH)

    Correct Answer
    A. Potential of hydrogen (pH)
    Explanation
    The pH scale is used to measure the strength of an electrolyte. The pH scale measures the concentration of hydrogen ions in a solution, which indicates the acidity or alkalinity of the solution. A lower pH value indicates a higher concentration of hydrogen ions and a stronger electrolyte, while a higher pH value indicates a lower concentration of hydrogen ions and a weaker electrolyte. Therefore, the potential of hydrogen (pH) is the correct scale to measure the strength of an electrolyte.

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  • 40. 

    (214) The paint edges around the chemically stripped areas are feathered in order to

    • Ensure a smooth, overlapping transition between the old and new paint surfaces.

    • Allow for accurate measurements corrosion removal areas.

    • Ensure good surface contact for chemical strippers.

    • Allow for easier access to the bare metal areas.

    Correct Answer
    A. Ensure a smooth, overlapping transition between the old and new paint surfaces.
    Explanation
    The paint edges around the chemically stripped areas are feathered in order to ensure a smooth, overlapping transition between the old and new paint surfaces. Feathering the edges helps to blend the new paint with the existing paint, creating a seamless appearance. This technique is commonly used in automotive painting and other applications where a uniform finish is desired.

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  • 41. 

    (215) The two categories that corrosion preventive compounds (CPC) are separated into include

    • Light and heavy.

    • Clear and translucent.

    • Viscous and non-viscous.

    • Water displacing and non-water displacing.

    Correct Answer
    A. Water displacing and non-water displacing.
    Explanation
    Corrosion preventive compounds (CPC) are categorized based on their ability to displace water. Water displacing CPCs are designed to remove moisture and prevent the formation of rust by displacing water from metal surfaces. On the other hand, non-water displacing CPCs do not have this ability and are used for general corrosion prevention purposes. This categorization helps in selecting the appropriate CPC based on the specific requirements and conditions.

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  • 42. 

    (218) When do you mix chemical paint remover?

    • 1 hour before use

    • 2 hours before use.

    • 30 minutes before use.

    • Immediately before use.

    Correct Answer
    A. Immediately before use.
    Explanation
    Chemical paint remover is mixed immediately before use to ensure its effectiveness. Mixing it too early can cause the remover to lose its potency or evaporate, reducing its ability to remove paint effectively. By mixing it immediately before use, the remover remains fresh and active, allowing it to work efficiently on the painted surface.

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  • 43. 

    (223) What is the most common cause of coating failure?

    • Unusual climatic conditions

    • Inadequate surface preparation

    • Using faulty finishing materials

    • Incorrect techniques during application

    Correct Answer
    A. Inadequate surface preparation
    Explanation
    Inadequate surface preparation is the most common cause of coating failure. When the surface is not properly cleaned, roughened, or primed before applying the coating, it can lead to poor adhesion and eventual failure of the coating. Proper surface preparation ensures that the coating adheres well to the substrate and provides long-lasting protection.

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  • 44. 

    (402) The fastener removal tool is primarily designed for use on a

    • Concave surface

    • Convex surface

    • Curved surface

    • Flat surface

    Correct Answer
    A. Flat surface
    Explanation
    The fastener removal tool is primarily designed for use on a flat surface. This means that the tool is most effective and efficient when used on a surface that is even and without any curves or indentations. Using the tool on a concave, convex, or curved surface may not provide the desired results and could potentially damage the surface or the tool itself. Therefore, it is important to use the fastener removal tool on a flat surface to ensure its proper functionality and effectiveness.

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  • 45. 

    (411) What other problem besides centering can you eliminate by using a washer-nut assembly on a taper-lok pin?

    • Washer fumbling

    • Over torquing the nut

    • Corrosion of the mating surface

    • Mismatch of the pin and material composition

    Correct Answer
    A. Washer fumbling
    Explanation
    Using a washer-nut assembly on a taper-lok pin can eliminate the problem of washer fumbling. This means that the washer will remain securely in place and not move or fall off during the assembly process or while in use. This can help ensure that the pin and washer are properly aligned and provide a secure connection.

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  • 46. 

    (422) Which method would you use to bend a piece of tubing if a tube bender is not available?

    • Sand.

    • Nonfiller.

    • Lead filler.

    • Liquid filler

    Correct Answer
    A. Sand.
    Explanation
    When a tube bender is not available, sand can be used as a method to bend a piece of tubing. This technique involves filling the tube with sand and then heating it. The heated tube can then be bent manually without collapsing or kinking, thanks to the support provided by the sand. This method is commonly used in situations where a tube bender is not accessible or practical.

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  • 47. 

    (428) When is it permissible to reswage a Dynatube swage?

    • Never.

    • When the fitting is 0.005 to 0.010 inch overswaged

    • When the fitting is 0.011 to 0.015 inch overswaged

    • When the fitting is 0.016 to 0.020 inch underswaged

    Correct Answer
    A. Never.
    Explanation
    Reswaging a Dynatube swage is never permissible. This means that once a Dynatube swage is installed, it should not be adjusted or modified in any way. Reswaging can compromise the integrity and strength of the fitting, leading to potential failures or leaks. It is important to ensure that the swage is properly sized and installed initially to avoid the need for reswaging.

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  • 48. 

    (604) When is it acceptable to have bubbles on a plastic window?

    • Bubbles are never acceptable

    • They only impair vision along the edges of the panel.

    • They are well scattered and within acceptable number, diameter and spacing

    • They do not impair vision, are well scattered and within the limitations of the TO.

    Correct Answer
    A. They do not impair vision, are well scattered and within the limitations of the TO.
  • 49. 

    (606) An angle drill is used to remove damage when

    • The damage is in a limited space

    • The skin and sub-structural damage cutout are the same

    • The skin and sub-structural damage cutout are not the same

    • Only the skin is damaged and the sub-structural member is intact

    Correct Answer
    A. The damage is in a limited space
    Explanation
    An angle drill is used to remove damage when the damage is in a limited space. This is because an angle drill is designed to access and work in tight or confined areas where a regular drill cannot reach. It allows for precise and controlled drilling in cramped spaces, making it the ideal tool to remove damage in such situations.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 01, 2018
    Quiz Created by
    Amber

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