2A753 Volume 1 Aircraft Structural Journeyman

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  • 1/90 Questions

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

    • Scriber
    • Dividers
    • Prick punch
    • Layout punch
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Aircraft Maintenance Quizzes & Trivia
About This Quiz

This quiz assesses knowledge in aircraft structural maintenance, focusing on tools and techniques used in the field. It is designed for 2A753 volume 1 aircraft structural journeymen, testing skills in using specific tools for tasks like chiseling, seaming, and measuring corrosion depth.

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  • 2. 

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

    • Malleability

    • Elasticity

    • Ductility

    • Density

    Correct Answer
    A. Malleability
    Explanation
    Malleability refers to the ability of a metal to be hammered, rolled, or pressed into various shapes without breaking. It is a property that allows metals to be easily formed into different shapes and sizes. Elasticity refers to the ability of a material to return to its original shape after being deformed, while ductility refers to the ability of a material to be stretched into a wire. Density, on the other hand, is a measure of how much mass is contained in a given volume of a substance. Therefore, the correct answer for this question is malleability.

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  • 3. 

    (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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  • 4. 

    (004)which lever shear can cut sheet metal of unlimited Length or width?

    • Scroll

    • Lever

    • Circle

    • Throat-less

    Correct Answer
    A. Throat-less
    Explanation
    A throat-less lever shear can cut sheet metal of unlimited length or width because it does not have a throat or gap between the blades. This allows the sheet metal to be fed through the shear without any limitations on its size. The absence of a throat also provides greater flexibility and maneuverability when cutting sheet metal, making it an ideal choice for cutting large or irregularly shaped pieces.

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  • 5. 

    (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. It is a measuring tool specifically designed to measure the depth of small holes or depressions. By placing the depth gauge into the pit, the user can accurately measure the depth of the corrosion, allowing for proper assessment and potential repair of the affected area. Magnifying glass, straight edge, and scribe are not suitable for measuring the depth of a corrosion pit.

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  • 6. 

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

    • Gram

    • Pound

    • Ounce

    • Kilogram

    Correct Answer
    A. Gram
    Explanation
    The unit of measure used with a scale is the gram. A gram is a metric unit of weight or mass, commonly used for measuring small objects or quantities. It is a more precise unit compared to pounds, ounces, or kilograms, which are used for larger or heavier objects. Therefore, when using a scale, the most appropriate unit of measure is the gram.

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  • 7. 

    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 channel the chips out of the hole being drilled, preventing them from clogging the drill bit and hindering the drilling process. This allows for efficient drilling and helps to maintain the quality of the drilled hole.

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  • 8. 

    (014) Which of these metals is ferrous?

    • Zinc

    • Gold

    • Silver

    • Cast iron

    Correct Answer
    A. Cast iron
    Explanation
    Cast iron is the correct answer because it is a type of iron-carbon alloy that contains a high amount of carbon (typically between 2-4%). This high carbon content gives cast iron its characteristic hardness and brittleness. Since cast iron is primarily made up of iron, it is considered a ferrous metal. Zinc, gold, and silver are not ferrous metals as they do not primarily consist of iron.

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  • 9. 

    (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 is used to compare the strength of different materials while taking into account their weight, allowing for a more accurate assessment of their performance. It is a crucial factor in various industries, such as aerospace and automotive, where lightweight yet strong materials are highly desirable. The strength/weight ratio helps engineers and designers determine the most suitable material for a specific application, balancing strength and weight considerations.

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  • 10. 

    (022) What is the identifying color for Aramid/epoxy materials?

    • Black

    • White

    • Yellow-gold

    • Translucent green

    Correct Answer
    A. Yellow-gold
    Explanation
    Aramid/epoxy materials are typically identified by their yellow-gold color. This color is often used to distinguish these materials from other types of composites or materials. The yellow-gold color is a visual indicator that helps in identifying and differentiating aramid/epoxy materials from others, making it easier for technicians and engineers to work with these specific materials.

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  • 11. 

    (013) When documenting equipment discrepancies, what does a red X denote on an Air Force Technical Order (AFTO) Form 244, Industrial/Support Equipment Record?

    • Unsafe condition

    • Unknown condition

    • Safe for use condition

    • Unsatisfactory condition

    Correct Answer
    A. Unsafe condition
    Explanation
    A red X on an Air Force Technical Order (AFTO) Form 244, Industrial/Support Equipment Record, denotes an unsafe condition. This means that the equipment has a defect or issue that makes it unsafe to use. The red X serves as a visual indicator to alert personnel that the equipment should not be used until the issue is resolved.

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  • 12. 

    (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 metal property that defines its resistance to a cutting action, similar to the cutting done by a pair of scissors. Shear strength measures the ability of a material to withstand forces that are applied parallel or tangential to its surface, causing it to deform or break. In the context of the question, shear strength accurately describes the property that determines a metal's resistance to cutting.

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  • 13. 

    (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 offers a good balance between strength and workability. It has high strength compared to other alloys while still being easily workable, making it suitable for various applications. The other options, 1000, 1100, and 3003, may have different strengths and workability properties, but they are not specifically known for being high in strength without a substantial loss in workability.

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  • 14. 

    (029) The amount of metal needed to form a bend is called the

    • Bend allowance

    • Radius of bend

    • Degree of bend

    • Setback allowance

    Correct Answer
    A. Bend allowance
    Explanation
    The amount of metal needed to form a bend is called the bend allowance. This term refers to the length of material that is required to create a bend in a metal sheet or plate. It takes into account factors such as the thickness of the material, the angle of the bend, and the radius of the bend. The bend allowance is an important calculation in metal fabrication and is used to determine the overall dimensions and layout of a bent piece of metal.

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  • 15. 

    (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 surface with one flat side and one rounded side, allowing it to conform to the shape of the concave surface. The rounded side of the file helps to remove material evenly and smoothly, while the flat side can be used for finishing and smoothing out any rough edges. Using a half-round file ensures that the file will make contact with the entire concave surface, resulting in a more accurate and even filing process.

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  • 16. 

    010 Which hand forming operation refers to the reduction of an area of a piece of metal?

    • bumping

    • Crimping

    • Shrinking

    • Stretching

    Correct Answer
    A. Shrinking
    Explanation
    Shrinking is the hand forming operation that refers to the reduction of an area of a piece of metal. This process involves applying pressure or force to a specific area of the metal, causing it to contract and reduce in size. This can be done using various tools and techniques, such as hammering or using a shrinking disc. Shrinking is commonly used in metalworking to shape and manipulate metal pieces, particularly when creating curves or contours. It allows for precise control over the metal's shape and can be used to achieve desired dimensions and aesthetics.

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  • 17. 

    (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. This is because different materials and thicknesses require different cutting settings and blade types. The job selector dial allows you to choose the appropriate settings for the specific material and thickness you are working with, ensuring optimal cutting performance and accuracy.

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  • 18. 

    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 a consistent and efficient cutting motion, as having multiple teeth engaged in the cutting process provides better stability and control. If only one tooth is cutting at a time, it can cause the blade to wander and result in an uneven or jagged cut. Therefore, selecting a blade with the appropriate pitch helps to maintain a smooth and accurate cutting action.

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  • 19. 

    009 When Stretching or shrinking ,the edge of flanges can crack and split as the result of

    • Stretching the flange too quickly.

    • Under-adjusting the length of foot stroke.

    • Repeating the strokes too long in one spot

    • Using the wrong set of jaws in the machine.

    Correct Answer
    A. Repeating the strokes too long in one spot
    Explanation
    When stretching or shrinking, repeating the strokes too long in one spot can cause the edge of the flanges to crack and split. This happens because applying excessive force in a localized area for an extended period of time can exceed the material's ability to withstand the stress, leading to the formation of cracks and splits. It is important to evenly distribute the stretching or shrinking strokes to prevent concentrated stress on a single spot.

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  • 20. 

    (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
    Form 244, Industrial/Support Equipment Record, is used to document equipment maintenance in the Air Force. This form is specifically designed for industrial and support equipment, allowing technicians to record and track maintenance activities, repairs, inspections, and other relevant information. It helps in maintaining accurate and up-to-date records of equipment maintenance, ensuring proper documentation and traceability of maintenance actions.

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  • 21. 

    (022) What area of a metal-bonded honeycomb panel is referred to as the transition area?

    • Bay area

    • Flat portion

    • Panel attachment area

    • Area between the flat section of the panel and the panel attachment area.

    Correct Answer
    A. Area between the flat section of the panel and the panel attachment area.
    Explanation
    The transition area of a metal-bonded honeycomb panel refers to the area between the flat section of the panel and the panel attachment area. This is the region where the panel transitions from the flat surface to the area where it is attached or connected to another component.

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  • 22. 

    (026) Which statement best describes the relationship between blueprints and mechanical drawings?

    • Blueprints are another name for mechanical drawings.

    • Blueprints are much larger than mechanical drawings.

    • Blueprints are much smaller than mechanical drawings.

    • Blueprints are on blue paper and mechanical drawings are on brown paper.

    Correct Answer
    A. Blueprints are another name for mechanical drawings.
    Explanation
    The correct answer is "Blueprints are another name for mechanical drawings." This statement suggests that blueprints and mechanical drawings are essentially the same thing, just referred to by different names. It implies that the terms "blueprints" and "mechanical drawings" can be used interchangeably to describe the same type of technical drawings used in engineering and construction.

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  • 23. 

    (026) A thin line having alternating and evenly spaced long and short dashes is a

    • Center line

    • Border line

    • Hidden line

    • Dimension line

    Correct Answer
    A. Center line
    Explanation
    A thin line having alternating and evenly spaced long and short dashes is known as a center line. This type of line is commonly used to indicate the center of an object or to divide it into two equal parts. It helps in providing a visual reference for symmetrical alignment or positioning.

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  • 24. 

    006 What type of grinding wheel do you use when you're grinding aluminum using a bench grinder?

    • Aluminum oxide

    • Silicon carbide

    • Diamond

    • Garnet

    Correct Answer
    A. Silicon carbide
    Explanation
    Silicon carbide is the correct answer for grinding aluminum using a bench grinder. Silicon carbide is a type of abrasive material that is harder than aluminum oxide, making it suitable for grinding softer materials like aluminum. It is also less likely to cause clogging or glazing of the grinding wheel, which can occur when using other types of abrasive materials. Therefore, silicon carbide is the preferred choice for grinding aluminum on a bench grinder.

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  • 25. 

    (022) Which fiberglass assembly consists of two or more layers of fiberglass cloth bonded together with the aid of heat and pressure?

    • Filament

    • Laminated

    • Mat-molded

    • Honeycomb

    Correct Answer
    A. Laminated
    Explanation
    A laminated fiberglass assembly consists of two or more layers of fiberglass cloth that are bonded together using heat and pressure. This process helps to create a stronger and more durable material. The layers of fiberglass cloth are stacked on top of each other and then heated, causing the resin in the cloth to melt and bond the layers together. This results in a solid and rigid structure that is commonly used in various applications such as construction, automotive, and aerospace industries.

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  • 26. 

    (024) The product of multiplying 5/6 by 3/5 is

    • 1 7/18-

    • 18/25-

    • 8/11-

    • 1/2

    Correct Answer
    A. 1/2
    Explanation
    When multiplying fractions, you multiply the numerators together and the denominators together. In this case, multiplying 5/6 by 3/5 gives us (5*3)/(6*5) = 15/30. However, this fraction can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 15. So, 15/30 simplifies to 1/2.

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  • 27. 

    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 small distance allows for a precise and close shave without causing any cuts or irritation to the skin.

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  • 28. 

    011 if you need to add additional crimps to shrink  a form angle you place them

    • In the location of the original crimps

    • On the ends of the formed angle.

    • Between the original crimps

    • In the middle of the angle

    Correct Answer
    A. Between the original crimps
    Explanation
    When adding additional crimps to shrink a form angle, they should be placed between the original crimps. This is because the original crimps are already in place and serve as the starting point for the angle. By adding the additional crimps between the original ones, the angle can be further tightened and secured. Placing the crimps in the location of the original ones or on the ends of the formed angle would not effectively shrink the angle.

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  • 29. 

    (021) Besides being cost effective, composite materials have excellent

    • weight qualities.

    • strength qualities.

    • repairability characteristics.

    • fatigue- and corrosion-resistance qualities.

    Correct Answer
    A. fatigue- and corrosion-resistance qualities.
    Explanation
    Composite materials are known for their ability to resist fatigue and corrosion. This means that they can withstand repeated stress and exposure to harsh environments without deteriorating. This quality makes them highly durable and long-lasting, reducing the need for frequent repairs or replacements. Additionally, their resistance to corrosion ensures that they can be used in various applications, including those involving exposure to moisture or chemicals. Overall, the fatigue and corrosion resistance qualities of composite materials make them a desirable choice for many industries.

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  • 30. 

    (026) On a plane surface drawing, what is the longest horizontal dimension that is represented at right angles to the length?

    • Depth

    • Width

    • Distance

    • Projection

    Correct Answer
    A. Width
    Explanation
    The longest horizontal dimension that is represented at right angles to the length on a plane surface drawing is the width. This is because width refers to the measurement of something from side to side, and in a plane surface drawing, the width represents the longest horizontal dimension. Depth refers to the measurement of something from top to bottom, distance refers to the measurement of the space between two points, and projection refers to the representation of an object on a surface.

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  • 31. 

    (002)The included angle of a center punch should be?

    • 30

    • 45

    • 60

    • 90

    Correct Answer
    A. 90
    Explanation
    The included angle of a center punch should be 90 degrees. This angle is necessary to create an indentation on a material with precision and accuracy. A 90-degree angle ensures that the punch will create a perpendicular mark on the surface, allowing for easier drilling or further machining operations. This angle also helps prevent the punch from slipping or wandering off the desired location.

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  • 32. 

    (003)What type of metal cutting snips is known as tinner's snips?

    • Offset

    • Curved

    • Straight

    • Aviation

    Correct Answer
    A. Straight
    Explanation
    Tinner's snips are a type of metal cutting snips that have a straight blade. These snips are commonly used by tinners or sheet metal workers for cutting straight lines in metal sheets. The straight blade allows for precise and clean cuts, making it ideal for their specific tasks. Other types of snips, such as offset, curved, and aviation snips, have different blade shapes and are used for different cutting purposes.

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  • 33. 

    (003)What type of file do you use to sharpen the blades of cutting tools?

    • Square

    • Triangle

    • Single-cut

    • Double-cut

    Correct Answer
    A. Single-cut
    Explanation
    A single-cut file is used to sharpen the blades of cutting tools. This type of file has one set of parallel teeth that run diagonally across the file's surface. The teeth are designed to remove material in one direction only, making it ideal for sharpening the edges of cutting tools. The single-cut file provides a smooth and precise sharpening action, ensuring that the blades of cutting tools are sharpened effectively.

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  • 34. 

    (018) What is the world’s lightest structural metal?

    • Copper

    • Titanium

    • Aluminum

    • Magnesium

    Correct Answer
    A. Magnesium
    Explanation
    Magnesium is the world's lightest structural metal. It has a low density, making it lightweight and easy to handle. It is commonly used in industries such as aerospace and automotive due to its excellent strength-to-weight ratio. Magnesium alloys are also known for their high corrosion resistance and good machinability. Therefore, magnesium is the correct answer for the lightest structural metal.

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  • 35. 

    (001) what type of hammer do you use to do light chiseling?

    • Mallet

    • Riveting

    • Framing

    • Rawhide

    Correct Answer
    A. Riveting
  • 36. 

    006The machine capacity of a rotary punch is found on the

    • Front of each die holder.

    • Individual punches.

    • Upper turret

    • Lower turret

    Correct Answer
    A. Front of each die holder.
    Explanation
    The machine capacity of a rotary punch is found on the front of each die holder. This means that the information about the maximum capacity or capability of the punch machine can be found on the front side of the die holder. It is important to know this capacity in order to ensure that the machine is used within its limits and to prevent any damage or malfunctioning. The capacity may be indicated in terms of the maximum thickness or size of the material that can be punched using the machine.

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  • 37. 

    007 The largest twist drill the chuck on a hand drill can normally accommodate is

    • 3/16"

    • 1/4"

    • 5/16"

    • 3/8"

    Correct Answer
    A. 1/4"
    Explanation
    The largest twist drill that the chuck on a hand drill can normally accommodate is 1/4". This means that the chuck can hold drill bits with a maximum diameter of 1/4 inch.

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  • 38. 

    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 to the thickness. This could involve checking and adjusting the settings on the machine to ensure that it is properly calibrated for the thickness of the material being folded. It could also involve inspecting the material itself to see if there are any irregularities or obstructions that are preventing the bar folder from operating smoothly. By addressing the thickness, the bar folder should be able to operate freely and efficiently.

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  • 39. 

    (028) To show three dimensions on a drawing, it is usually necessary to show at least

    • Two views

    • Three views

    • Four views

    • Five views

    Correct Answer
    A. Two views
    Explanation
    To show three dimensions on a drawing, it is usually necessary to show at least two views. This is because a single view can only depict two dimensions, such as length and width. By showing two views, additional information about the third dimension, such as depth or height, can be conveyed. This allows for a more accurate representation of the object or structure being depicted. Additional views beyond two may be required for more complex or detailed drawings, but at a minimum, two views are necessary to show three dimensions.

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  • 40. 

    (013) What grit of sandpaper do you use to properly remove oxidation from the bare metal of a machine surface?

    • 100

    • 180

    • 400

    • 600

    Correct Answer
    A. 400
    Explanation
    To properly remove oxidation from the bare metal of a machine surface, a grit of 400 sandpaper should be used. This grit is considered fine and is suitable for gently removing the oxidation without causing damage to the metal surface. Using a coarser grit may be too abrasive and result in scratches or further damage to the metal, while a finer grit may not be effective enough to remove the oxidation. Therefore, 400 grit sandpaper is the appropriate choice for this task.

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  • 41. 

    (016) The heat-treatable aluminum alloy that offers the best weldability is

    • 2024

    • 2025

    • 5053

    • 6061

    Correct Answer
    A. 6061
    Explanation
    6061 is the correct answer because it is a heat-treatable aluminum alloy that offers excellent weldability. This alloy contains magnesium and silicon, which enhances its strength and makes it easier to weld. It is commonly used in various industries, including aerospace, automotive, and construction, where weldability is a crucial factor. 2024 and 2025 are also heat-treatable alloys, but they are not as weldable as 6061. 5053, on the other hand, is not a heat-treatable alloy and does not offer the same level of weldability as 6061.

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  • 42. 

    (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 layer of metal on both sides of the core, providing strength and stability to the panel. The core is typically made of a lightweight material such as aluminum or composite, and it is bonded securely to the metal facings. This construction method is commonly used in aerospace and construction industries to create lightweight yet strong panels for various applications.

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  • 43. 

    (026) To locate a specific point on a blueprint, you use letters and

    • Zone numbers

    • Station numbers

    • Drawing numbers

    • Usage block numbers

    Correct Answer
    A. Zone numbers
    Explanation
    To locate a specific point on a blueprint, zone numbers are used. Zone numbers are typically marked on blueprints to divide the area into different sections or zones. These numbers help in identifying the specific area or zone where the point is located, making it easier to locate and reference on the blueprint.

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  • 44. 

    (028) What type of drawing do you use to manufacture an object using very thin, flat metal?

    • Multiple view

    • Triple view

    • Double view

    • Single view

    Correct Answer
    A. Single view
    Explanation
    Single view drawings are used to manufacture objects using very thin, flat metal. This type of drawing provides a detailed representation of the object from a single perspective, including all necessary dimensions, measurements, and specifications. It allows the manufacturer to accurately understand and produce the object without the need for multiple views or additional drawings.

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  • 45. 

    (003)what type of chisel is best used for cutting V-shaped grooves?

    • Flat

    • Cape

    • Diamond -point

    • Half-roundnose

    Correct Answer
    A. Diamond -point
    Explanation
    A diamond-point chisel is best used for cutting V-shaped grooves. This type of chisel has a sharp, pointed tip that allows for precise and clean cuts in the shape of a V. The sharpness of the diamond-point chisel makes it ideal for creating grooves with sharp angles and clean edges.

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  • 46. 

    (012) If the material is not held flat against the face of the form during the bumping process it will

    • Crack

    • Crease

    • Buckle

    • Distort

    Correct Answer
    A. Buckle
    Explanation
    If the material is not held flat against the face of the form during the bumping process, it will buckle. This means that the material will bend or fold out of shape, creating a noticeable bulge or wave-like appearance. This can happen when there is not enough pressure or support applied to the material, causing it to warp or deform. Buckling can affect the overall quality and appearance of the material, making it important to ensure that it is held flat during the bumping process.

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  • 47. 

    (018) When cutting magnesium alloy sheet metal you should never use a

    • Router

    • Nibbler

    • Hacksaw

    • Circular saw

    Correct Answer
    A. Nibbler
    Explanation
    A nibbler is the correct answer because it is not suitable for cutting magnesium alloy sheet metal. Nibblers are typically used for cutting thin materials like sheet metal, but magnesium alloy is a soft and flammable material that can cause the nibbler to overheat and potentially ignite the metal. Therefore, using a nibbler to cut magnesium alloy sheet metal is unsafe and should be avoided.

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  • 48. 

    (019) Which steel alloy would you chose for corrosion resistance and hardness?

    • Nickel

    • Tungsten

    • Chromium

    • Molybdenum

    Correct Answer
    A. Chromium
    Explanation
    Chromium is chosen for its corrosion resistance and hardness. It forms a protective oxide layer on the surface, which prevents the steel from corroding. Additionally, chromium improves the hardness of the steel, making it more resistant to wear and deformation. Therefore, chromium is the ideal choice for applications where corrosion resistance and hardness are important factors.

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  • 49. 

    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, it allows the metal to be fed through the slip roll former in a conical shape. The angle of the back roller determines the angle at which the metal is bent, resulting in the desired conical shape. This method is effective in forming conical shapes because it allows for precise control over the bending process.

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  • Current Version
  • Jun 23, 2024
    Quiz Edited by
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  • Mar 07, 2017
    Quiz Created by
    Jbesrod

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