1.
When drafting, from where should the light fall on the drawing surface?
Correct Answer
D. Over the left shoulder of a right handed drafter
Explanation
The light should fall over the left shoulder of a right-handed drafter. This positioning of the light helps to minimize shadows and glare on the drawing surface, allowing the drafter to see the details clearly. It also prevents the drafter's hand from casting a shadow on the drawing while working.
2.
Covering the drawing board with vinyl or heavy paper.
Correct Answer
D. Helps keep the table from being damaged
Explanation
Covering the drawing board with vinyl or heavy paper helps keep the table from being damaged. By placing a protective layer on the drawing board, any potential scratches or marks caused by drafting tools or materials are prevented. This ensures that the table remains in good condition and extends its lifespan.
3.
One quality of vellum or tracing paper is
Correct Answer
D. Ease of reproduction
Explanation
Vellum or tracing paper is known for its ability to easily reproduce images or drawings. It is commonly used in the field of art and design because it allows for easy tracing or transferring of designs onto other surfaces. This quality makes it a preferred choice for artists and architects who need to create multiple copies or make alterations to their work.
4.
To store blueprints or mechanical drawings, you should
Correct Answer
B. Store them flat
Explanation
To store blueprints or mechanical drawings, it is recommended to store them flat. This is because hanging them up may cause them to become damaged or distorted over time. Storing them flat helps to maintain their original shape and prevents any creasing or folding that could affect their accuracy or readability. Additionally, keeping them cool helps to preserve the quality of the paper and prevent any potential damage from heat or humidity. Folding them neatly is not advisable as it can lead to permanent creases and make them difficult to use or reference in the future.
5.
Basic drafting equipment consists of
Correct Answer
B. A drawing board, T square, and drafting instruments
Explanation
The correct answer is a drawing board, T square, and drafting instruments. These are the basic equipment needed for drafting. A drawing board provides a stable surface to work on, a T square is used to draw straight lines, and drafting instruments such as compasses, rulers, and protractors are used for precise measurements and drawing shapes.
6.
To keep your T square from warping, you should
Correct Answer
A. Lay it flat
Explanation
To keep your T square from warping, it is best to lay it flat. This is because when a T square is laid flat, it distributes the weight evenly across its surface and reduces the chances of bending or warping. Standing it up or hanging it by the head can put uneven pressure on the T square, causing it to warp over time. Oiling it regularly may help with maintenance, but it is not specifically related to preventing warping.
7.
When you need to quickly draw angles of other than multiples of 15 degrees, a good tool to select is
Correct Answer
D. An adjustable triangle
Explanation
An adjustable triangle is a good tool to select when you need to quickly draw angles of other than multiples of 15 degrees. Unlike a protractor which is used for measuring angles, an adjustable triangle allows you to easily draw angles of any size. It has a hinge mechanism that allows you to adjust the angle to your desired measurement, making it a versatile tool for drawing precise angles.
8.
The purpose of an engineer's or architect's scale is to
Correct Answer
C. Reduce or enlarge drawings based on the scale
Explanation
An engineer's or architect's scale is used to reduce or enlarge drawings based on the scale. This means that the scale allows the engineer or architect to accurately represent measurements and proportions of the actual object or structure they are designing or constructing. By using the scale, they can create drawings that are proportional and to scale, which helps in accurately representing the final product.
9.
The engineer's scale divides inches into
Correct Answer
A. Decimals
Explanation
The engineer's scale divides inches into decimals. This means that the scale allows for precise measurements in inches by using decimal values instead of fractions or other units of measurement. Decimal divisions provide a more accurate and consistent way of measuring, making it easier for engineers to work with precise measurements and calculations.
10.
The scale used the most often in drafting, is the
Correct Answer
D. Architect's scale
Explanation
The architect's scale is the most commonly used scale in drafting. It is specifically designed for architectural drawings and allows architects to accurately represent measurements on a smaller scale. This scale typically includes ratios such as 1/4 inch, 1/8 inch, and 1/16 inch to represent measurements on a drawing that is a fraction of the actual size. The architect's scale is essential in ensuring that architectural drawings are precise and to scale, making it the most frequently used scale in drafting.
11.
The compass, least likely to spring out of shape during use, is the
Correct Answer
D. Center bow compass
Explanation
The center bow compass is the least likely to spring out of shape during use compared to the other options. This is because the center bow compass has a sturdy construction with a fixed center leg that provides stability and prevents the legs from bending or flexing easily. The other types of compasses, such as the variable compass, end bow compass, and side bow compass, have movable or flexible legs that are more prone to springing out of shape during use.
12.
If you need to increase the radius of a circle when using the fraction head compass, select
Correct Answer
A. Extension bars
Explanation
When using the fraction head compass, extension bars are selected to increase the radius of a circle. Extension bars are additional attachments that can be added to the compass legs, allowing for a longer distance between the two legs. By increasing the distance, the radius of the circle can be extended, allowing for larger circles to be drawn.
13.
The tool used to transfer measurements and distances is
Correct Answer
A. Dividers
Explanation
Dividers are a tool commonly used to transfer measurements and distances accurately. They consist of two sharp points that can be adjusted to a desired distance and locked in place. By placing one point on a starting point and opening or closing the other point, the measurement can be transferred to another location. Dividers are commonly used in various fields such as woodworking, metalworking, and drafting to ensure precise measurements and layouts.
14.
When you use dividers to step off equal spaces on a line, you
Correct Answer
C. Alternate clockwise an counter clockwise steps
Explanation
When using dividers to step off equal spaces on a line, you alternate between clockwise and counterclockwise steps. This ensures that the spaces are evenly distributed and helps to maintain accuracy in measurements. By alternating the direction of the steps, you can prevent any potential errors that may arise from consistently stepping in only one direction.
15.
You can reduce the time you do repetitive drafting jobs by using
Correct Answer
C. A drafting template
Explanation
A drafting template is a tool that contains pre-drawn symbols and shapes commonly used in drafting. By using a drafting template, individuals can quickly and accurately reproduce these shapes without having to manually draw them each time. This saves time and effort in repetitive drafting jobs as the template provides a consistent and efficient way to create the desired shapes.
16.
If you use a heavy coating of layout dye on your workpiece, you'll have
Correct Answer
A. Ragged and uneven lines
Explanation
If a heavy coating of layout dye is applied to a workpiece, it will result in ragged and uneven lines. This is because the excessive amount of dye will cause the lines to bleed and spread, creating an irregular and messy appearance.
17.
A good application of the small rule with holder is measuring
Correct Answer
A. Internal recesses
Explanation
The small rule with holder is a useful tool for measuring internal recesses. It allows for accurate and precise measurements within tight spaces that may be difficult to access with other measuring tools. By using the small rule with holder, one can easily measure the dimensions of internal recesses such as holes, slots, or gaps. This tool is particularly beneficial in industries such as manufacturing or engineering where precise measurements are crucial for ensuring proper fit and functionality of components.
18.
When you construct a figure using geometric construction, use a
Correct Answer
A. Pencil, a compass, and a straightedge
Explanation
When constructing a figure using geometric construction, a pencil is needed to make markings on the paper. A compass is used to draw circles or arcs of a specific radius. A straightedge is used to draw straight lines or to measure distances accurately. Therefore, the correct tools needed for geometric construction are a pencil, a compass, and a straightedge.
19.
When you need to divide an area into equal spaces, use a scale that
Correct Answer
B. Spans slightly more than the space you want to divide
Explanation
When dividing an area into equal spaces, using a scale that spans slightly more than the space you want to divide ensures that the divisions are accurate and evenly distributed. This allows for a better visual representation and avoids any potential inaccuracies that may occur if the scale spans slightly less than the space.
20.
When constructing a perpendicular bisector, the method most accurate is
Correct Answer
A. Using geometric construction
Explanation
Using geometric construction is the most accurate method for constructing a perpendicular bisector. Geometric construction involves using a compass and straightedge to create precise and accurate constructions. By constructing the perpendicular bisector using geometric construction, we can ensure that the line is exactly perpendicular to the given line segment and passes through its midpoint. This method allows for precise measurements and ensures the accuracy of the construction.
21.
Which is not true of using arcs?
Correct Answer
B. Is not accurate
Explanation
Using arcs does not lend accuracy.
22.
Whe constructing circles and arcs on drawings, first draw
Correct Answer
B. The circles or arcs
Explanation
When constructing circles and arcs on drawings, it is important to first draw the circles or arcs. This is because the circles or arcs serve as the main shapes that need to be accurately represented in the drawing. By drawing them first, it ensures that the correct size and position of the circles or arcs are achieved. Once the circles or arcs are drawn, other elements such as straight lines, bisectors of circles, and straight line tangents can be added accordingly to complete the construction.
23.
When constructing a straight line, equal to an arc, set the dividers to divide the
Correct Answer
B. Arc into equal parts
Explanation
When constructing a straight line equal to an arc, the dividers are set to divide the arc into equal parts. This means that the length of the straight line will be divided into segments that are of equal length to the corresponding segments of the arc. This ensures that the straight line is an accurate representation of the arc and that both have the same proportionate lengths.
24.
When you construct plane figures, you're showing
Correct Answer
C. Three dimensional objects, like a ball
Explanation
When constructing plane figures, you are showing three-dimensional objects, like a ball. A plane figure is a two-dimensional shape that exists on a flat surface, such as a piece of paper. However, when you construct these figures, you are giving them depth and representing them as three-dimensional objects. A ball is an example of a three-dimensional object that can be constructed using plane figures.
25.
A pictoral view of an object is given by an
Correct Answer
A. Oblique projection
Explanation
An oblique projection is a type of pictorial view that shows the object with one face parallel to the picture plane and the other faces at an angle. In this projection, the object is displayed with a combination of two or more scales, resulting in a more realistic representation. It provides a three-dimensional view with depth and height, making it suitable for presenting objects with irregular shapes. Orthographic projection, on the other hand, shows the object in a two-dimensional view with all the faces parallel to the picture plane. Isometric projection and axonometric projection are also types of pictorial views, but they show the object with equal scales for all three dimensions, resulting in a more distorted representation.
26.
When the projection lines are parallel to eachother and perpendicular to the projection plane, the projection is known as
Correct Answer
D. An orthograpHic projection
Explanation
When the projection lines are parallel to each other and perpendicular to the projection plane, the resulting projection is known as an orthographic projection. In this type of projection, the object is represented without any distortion or foreshortening, providing a true and accurate representation of its shape and size.
27.
The minimum number of views needed in an orthogrpahic projection is
Correct Answer
A. 1
Explanation
In an orthographic projection, only one view is needed to accurately represent the object. This is because an orthographic projection shows the object from multiple sides simultaneously, including the front, top, and side views. Therefore, a single view is sufficient to convey all the necessary information about the object's shape and dimensions.
28.
The main reason to include an auxiliary view on a print is
Correct Answer
B. For clarification of an object or detail
Explanation
An auxiliary view is included on a print to provide a clearer and more detailed representation of a specific object or detail. This additional view helps to eliminate any ambiguity or confusion that may arise from the main drawing. It allows for a better understanding of the shape, size, and orientation of the object or detail, ensuring that it is accurately represented in the print. By including an auxiliary view, any potential misunderstandings or misinterpretations can be avoided, thus enhancing the overall clarity and accuracy of the print.
29.
When you have to show two or more different direction cutting planes through an object, us the
Correct Answer
C. Offset section
Explanation
An offset section is used when you need to show two or more different direction cutting planes through an object. This type of section allows you to offset the cutting plane from the object's centerline or axis, providing a clear view of the internal features or components. By offsetting the section, you can highlight specific areas of interest and show multiple perspectives simultaneously. This is particularly useful when complex geometries or intricate details need to be displayed in a clear and understandable manner.
30.
If you have three or more adjacent parts in a cross section, two of the parts should have 45 degree crosshatching, the remaining should ahve crosshatching of
Correct Answer
C. 30 to 60 degrees
Explanation
In a cross section with three or more adjacent parts, it is required to have two parts with 45-degree crosshatching. The remaining part should have crosshatching between 30 to 60 degrees. This means that the angle of the crosshatching lines should be between 30 and 60 degrees, ensuring that it is not less than 30 degrees or more than 60 degrees. This arrangement helps to differentiate and distinguish the different parts in the cross section effectively.
31.
To construct an oblique prjection, always situate the side with the most complex or irregular features as the
Correct Answer
D. Front view
Explanation
In order to construct an oblique projection, it is important to position the side with the most complex or irregular features as the front view. This is because the front view provides the most detailed and accurate representation of these features, allowing for a more accurate projection. The top view, side view, and rear view may not capture the intricate details of the complex or irregular features as effectively as the front view. Therefore, the front view is the most suitable choice for constructing an oblique projection.
32.
The lines that define the end limits of an edge or surface to which a measurement applies are known as
Correct Answer
C. Extension lines
Explanation
Extension lines are the lines that extend from the edge or surface of an object to indicate the limits to which a measurement applies. They are used to show the starting and ending points of a dimension. In technical drawings, extension lines are typically drawn as thin, dotted lines that are perpendicular to the dimension line. They help to clarify the specific area or feature being measured and provide a clear reference for the dimension.
33.
The line that shows where a note applies to an object on the drawing is a
Correct Answer
B. Leader line
Explanation
A leader line is a line that is used to indicate where a note or dimension applies to an object on a drawing. It is typically a thin, straight line with an arrow or dot at one end, pointing towards the object being referenced. Leader lines are commonly used in technical drawings to provide clarity and avoid confusion when indicating specific features or measurements on a drawing.
34.
The lines that represent the axes of symmetrical parts and serve as extension lines for holes or other features are called
Correct Answer
B. Center lines
Explanation
Center lines are the lines that represent the axes of symmetrical parts and serve as extension lines for holes or other features. They are used to show the center of a circle or an arc and help in determining the symmetry of a part. Center lines are commonly used in technical drawings to provide clear and accurate information about the shape and dimensions of a part.
35.
You're going to draw an object and you realize that even though it's uniform in length, it's too long for the print, you select
Correct Answer
B. A break line
Explanation
When drawing an object that is too long for the print, selecting a break line is the appropriate choice. A break line is used to indicate that a portion of the object has been removed for the sake of space or clarity. It helps to show that the object continues beyond the portion that is visible on the print. This allows the viewer to understand the complete length of the object, even if it is too long to fit within the drawing.
36.
If you dimension a long arc whose center is off the print, the leader line is
Correct Answer
A. Broken
Explanation
If you dimension a long arc whose center is off the print, the leader line is broken. This means that the leader line will have breaks or gaps in it, indicating that the center of the arc is not shown on the print.
37.
To indicate the location of the center of an arc, use
Correct Answer
D. One horizontal and one vertical dimension
Explanation
To indicate the location of the center of an arc, one horizontal and one vertical dimension are used. This is because the center of an arc is determined by its position along both the horizontal and vertical axes. By specifying both dimensions, the exact location of the center can be accurately identified.
38.
When you show contour dimensions, show the size and location of holes in the
Correct Answer
B. Views where the contours appear
Explanation
The correct answer is "views where the contours appear." When showing contour dimensions on a blueprint, it is important to indicate the size and location of holes in the views where the contours are visible. This ensures that the dimensions are accurately represented and easily understood by the reader. Placing the dimensions in the views with the contours allows for clear and concise communication of the necessary information.
39.
What feature permits a screw head to seat flush with the parent material?
Correct Answer
C. Countersink
Explanation
A countersink is a feature that allows a screw head to seat flush with the parent material. It is a conical hole that is created in the material to accommodate the screw head. By using a countersink, the screw head can be recessed into the material, providing a smooth and flush surface. This helps to prevent any obstructions or protrusions that could interfere with the overall appearance or functionality of the project.
40.
For press fit purposes, the information you must include on the print for knurling is the
Correct Answer
C. Tolerance diameter before the knurl
Explanation
When using press fit for knurling, it is important to include the tolerance diameter before the knurl on the print. This is because the knurling process will slightly increase the diameter of the part, and the tolerance diameter before the knurl ensures that the part will still fit properly in the assembly. Including the tolerance diameter before the knurl allows for proper clearance and ensures that the knurled part will fit correctly in the desired application.
41.
For fractional dimensions such as 1/8" and 1/16", the amount of tolerance on a print is
Correct Answer
A. 1/64"
Explanation
For fractional dimensions such as 1/8" and 1/16", the amount of tolerance on a print is 1/64". This means that the allowable deviation or variation from the specified dimension is 1/64 of an inch. In other words, the actual measurement of the part can be up to 1/64" smaller or larger than the specified dimension and still be considered within tolerance. This level of tolerance is smaller and more precise compared to the other options provided (1/16", 1/8", and 1/4"), indicating that the manufacturing process requires a higher level of accuracy and precision for these fractional dimensions.
42.
The tolerance for a dimension with a two place (X.XX) decimal is
Correct Answer
B. 0.010 inch
Explanation
The tolerance for a dimension with a two place (X.XX) decimal is 0.010 inch. Tolerance refers to the allowable variation or deviation from the specified dimension. In this case, a dimension with a two place decimal requires a tolerance of 0.010 inch, meaning that the actual measurement can vary by up to 0.010 inch from the specified dimension.
43.
For angular dimensions where no tolerances is given, hold the angle to the nearest
Correct Answer
C. Half degree
Explanation
When no tolerances are given for angular dimensions, it is recommended to hold the angle to the nearest half degree. This means that the angle can be rounded to the nearest 0.5 degrees. This level of precision allows for a reasonable level of accuracy without being overly specific. Holding the angle to the nearest half degree ensures that the measurement is not rounded too much, which could result in significant errors, while also avoiding unnecessary precision that may not be required for the given application.
44.
Surface roughness is the measurement of finely spaced irregularities whose hieght, width, and direction establish surface
Correct Answer
B. Pattern
Explanation
Surface roughness refers to the measurement of the finely spaced irregularities on a surface. These irregularities can vary in terms of their height, width, and direction, and they collectively establish the surface pattern. Therefore, the correct answer is "pattern."
45.
Lay is defined as
Correct Answer
C. The surface pattern produced by tool marks
Explanation
The correct answer is "the surface pattern produced by tool marks". This means that when a material is subjected to machining or cutting processes, the tools used can leave marks or patterns on the surface. These tool marks can vary in depth, width, and direction, and they can be used to identify the type of tool that was used. Therefore, the surface pattern of a material can provide information about the machining process it has undergone.
46.
Welding symbols give all necessary information for a print, weld symbols give
Correct Answer
A. Type of weld and weld contour
Explanation
Welding symbols provide information about the type of weld and the weld contour. The type of weld refers to the specific welding process that should be used, such as fillet weld or groove weld. The weld contour indicates the shape and dimensions of the weld, such as whether it is a straight line or has a specific curve. This information is important for understanding how the weld should be performed and what the final result should look like.
47.
To show that a weld needs to be placed on the other side of the part the welding symbol should be placed
Correct Answer
D. On the top of the reference line
Explanation
The welding symbol is placed on the top of the reference line to indicate that a weld needs to be placed on the other side of the part. This placement signifies that the weld symbol applies to the side opposite to where the symbol is placed. Placing the symbol on the top of the reference line is a standardized convention in welding documentation.
48.
A tolerance zone defined by two parallel planes is the description of
Correct Answer
A. Flatness tolerance
Explanation
A flatness tolerance is described as a tolerance zone defined by two parallel planes. This means that the acceptable range for the flatness of a surface is determined by these two parallel planes. Any surface within this tolerance zone is considered to be within the acceptable flatness limits.
49.
Welding symbols give all necessary information for a print, weld symbols give
Correct Answer
A. Type of weld and weld contour
Explanation
Welding symbols provide information about the type of weld and the weld contour. This means that they indicate the specific method or process used for the weld and also show the shape or profile of the weld. The symbols do not give information about the material condition or weld contamination.
50.
A tolerance zone that is at a right angle to a datum plane is a
Correct Answer
D. Perpendicular tolerance
Explanation
A tolerance zone that is at a right angle to a datum plane is called a perpendicular tolerance. This means that the allowable deviation or variation in the specified dimension is perpendicular to the datum plane. In other words, the part or feature being measured must be within a specific range of perpendicularity to the datum plane in order to meet the tolerance requirements. This type of tolerance is commonly used in engineering and manufacturing to ensure proper alignment and fit of components.