1.
An innovation is ....
Correct Answer
B. An improvement of an existing technological product, process, or system
Explanation
This answer is correct because it accurately defines an innovation as an improvement of an existing technological product, process, or system. It implies that an innovation builds upon something that already exists and makes it better or more efficient. It distinguishes an innovation from a completely new creation by emphasizing the improvement aspect.
2.
A design brief is defined as ....
Correct Answer
C. A written plan that identifies a problem to be solved, its criteria, and its constraints
Explanation
A design brief is a written plan that identifies a problem to be solved, its criteria, and its constraints. This explanation accurately describes a design brief as a document that outlines the problem that needs to be addressed, the specific requirements or criteria that the solution should meet, and any limitations or constraints that need to be considered during the design process. It highlights the importance of having a clear plan in order to effectively solve a problem through design.
3.
___ is used to formally document, in chronological order, all work associated with a specific design project.
Correct Answer
C. Engineering notebook
Explanation
An engineering notebook is used to formally document, in chronological order, all work associated with a specific design project. It serves as a detailed record of the design process, including ideas, calculations, sketches, test results, and any other relevant information. This documentation is important for future reference, collaboration with team members, and legal purposes. A portfolio is a collection of completed projects, a design brief is a summary of project requirements, and an engineering log is a record of equipment maintenance and usage.
4.
A method of representing 3-D objects on a plane having only width and height is a ___.
Correct Answer
B. Orthographic projection
Explanation
Orthographic projection is a method of representing 3-D objects on a 2-D plane, such as a piece of paper, by using multiple 2-D views. These views show the object from different angles, typically front, top, and side views, and provide a clear and accurate representation of the object's shape and dimensions. Unlike perspective sketches or oblique sketches, which involve adding depth and distortion to create a sense of realism, orthographic projection focuses solely on the object's width and height, making it a suitable method for technical drawings and engineering designs.
5.
A ___ is an oblique pictorial where the depth is represented as half scale but the width and height are full scale.
Correct Answer
B. Cabinet pictorial
Explanation
A cabinet pictorial is an oblique pictorial where the depth is represented as half scale but the width and height are full scale. In this type of drawing, the object is shown with one side parallel to the picture plane, while the other two sides are shown at an angle. This gives a realistic representation of the object's dimensions, making it useful for visualizing how the object would appear in real life.
6.
According to the drawing below, what is the maximum diameter for hole H?
Correct Answer
C. .502
Explanation
Based on the drawing, the maximum diameter for hole H can be determined by measuring the distance between the two furthest points on the circumference of the hole. The drawing shows that the distance between these points is .502, indicating that the maximum diameter for hole H is .502.
7.
A ___ is an oblique pictorial where all dimensions are full scale.
Correct Answer
A. Cavalier pictorial
Explanation
A cavalier pictorial is an oblique pictorial where all dimensions are full scale. In this type of pictorial, the object is shown with one side at full scale, while the other two sides are reduced in size but still visible. This allows for a clear representation of the object's dimensions and proportions.
8.
A drawing which contains views of an object projected onto two or more orthographic planes is a(n) ___.
Correct Answer
D. Multi-view drawing
Explanation
A multi-view drawing is a drawing that shows multiple views of an object projected onto two or more orthographic planes. It is used to provide a comprehensive representation of the object from different angles and perspectives. This type of drawing is commonly used in engineering and technical design to accurately communicate the shape, size, and details of an object.
9.
A rope measures 9.25 yards. What is the measurement in feet?
Correct Answer
A. 27.75 ft
Explanation
Since there are 3 feet in 1 yard, to convert yards to feet, we need to multiply the number of yards by 3. Therefore, 9.25 yards multiplied by 3 equals 27.75 feet.
10.
A metal rod needs to be cut for a machine in Greenville. The rod length should be 67.5 cm, but your equipment only measures in American standard units. What measurement should you set on your manufacturing computer to get the correct length?
Correct Answer
B. 26.57 in
Explanation
To get the correct length of 67.5 cm, you need to convert it to inches. Since there are 2.54 cm in an inch, you can divide 67.5 cm by 2.54 to get the equivalent length in inches. This calculation gives us approximately 26.57 inches, which is the correct measurement to set on the manufacturing computer.
11.
A wooden barrel used for wine-making can hold 23,439 ml of liquid. How many liters can it hold?
Correct Answer
B. 23.439 L
Explanation
The question asks for the number of liters that a wooden barrel can hold. To convert milliliters to liters, we divide the number of milliliters by 1000. Therefore, 23,439 ml is equal to 23.439 L.
12.
On a working drawing, why is placement of your dimensions so important?
Correct Answer
B. To increase clarity and reduce confusion
Explanation
The placement of dimensions on a working drawing is important to increase clarity and reduce confusion. By placing dimensions in a clear and organized manner, it becomes easier for others to understand and interpret the drawing accurately. This helps to avoid misunderstandings and errors during the manufacturing or construction process. Additionally, proper placement of dimensions allows for efficient communication between designers, engineers, and manufacturers, ensuring that the final product meets the desired specifications.
13.
A graph of vertical bars representing the frequency distribution of a set of data is called ...
Correct Answer
C. A histogram
Explanation
A graph of vertical bars representing the frequency distribution of a set of data is called a histogram. Histograms are used to visually display the distribution of data and show the frequency of different values or ranges of values. They are particularly useful for displaying continuous data and can provide insights into the shape, center, and spread of the data.
14.
Which one of the following is not a measure of central tendency?
Correct Answer
D. Range
Explanation
The range is not a measure of central tendency because it measures the dispersion or spread of the data rather than summarizing the central or typical value. The range is calculated by subtracting the smallest value from the largest value in a dataset, providing information about the variability of the data points. Measures of central tendency, on the other hand, focus on summarizing the central or average value of the data, such as the mean, median, or mode.
15.
A full-scale working model of a design that is used to test a concept is called a ___.
Correct Answer
B. Prototype
Explanation
A full-scale working model of a design that is used to test a concept is called a prototype. A prototype is typically created to evaluate the functionality, performance, and feasibility of a design before it is mass-produced or implemented. It allows designers and engineers to identify any flaws or improvements needed in the design, making it an essential step in the product development process.
16.
A ___ is used to effectively communicate the details of a project and includes technical drawings with a parts list.
Correct Answer
C. Portfolio
Explanation
A portfolio is a collection of documents and materials that showcase the skills, achievements, and work of an individual or organization. In the context of a project, a portfolio can effectively communicate the details by including technical drawings and a parts list. It provides a comprehensive overview of the project, allowing others to understand the design and components involved.
17.
Which of the following is not a physical property?
Correct Answer
C. Height
Explanation
Height is not a physical property because it is a measurement of the distance between two points and does not describe any inherent characteristic of an object. Mass, density, and weight are physical properties because they describe the inherent characteristics of an object, such as its amount of matter, the relationship between its mass and volume, and the force of gravity acting on it, respectively.
18.
A drum cylinder serves as a storage vessel for used grease at a restaurant. The cylinder has a height of 3.25 feet and a diameter of 2.0 ft. What is the volume of the cylinder?
Correct Answer
B. 10.205 cubic feet
Explanation
The volume of a cylinder can be calculated using the formula V = πr^2h, where r is the radius of the cylinder and h is the height. In this case, the diameter is given as 2.0 ft, so the radius would be 1.0 ft (half of the diameter). Plugging in the values, we get V = π(1.0 ft)^2(3.25 ft) = 10.205 cubic feet. Therefore, the correct answer is 10.205 cubic feet.
19.
A concrete slab has a width of 7.5 ft, a depth of 4.2 ft, and a height of 0.5 ft. What is the surface area of the slab?
Correct Answer
B. 74.7 square feet
Explanation
The surface area of a rectangular prism can be found by multiplying the length, width, and height of the prism. In this case, the width is 7.5 ft, the depth is 4.2 ft, and the height is 0.5 ft. Multiplying these values together gives 7.5 ft * 4.2 ft * 0.5 ft = 15.75 cubic feet. However, the question asks for the surface area, not the volume. To find the surface area, we need to find the area of each face and add them together. The slab has 6 faces, with 2 faces having an area of 7.5 ft * 4.2 ft = 31.5 square feet, 2 faces having an area of 7.5 ft * 0.5 ft = 3.75 square feet, and 2 faces having an area of 4.2 ft * 0.5 ft = 2.1 square feet. Adding these areas together gives a total surface area of 31.5 square feet + 31.5 square feet + 3.75 square feet + 3.75 square feet + 2.1 square feet + 2.1 square feet = 74.7 square feet.
20.
Which of these is not a reason to perform reverse engineering on a product?
Correct Answer
D. Marketing Analysis
Explanation
Reverse engineering is the process of analyzing a product to understand its design, functionality, and components. It is commonly used for purposes such as visual, structural, and functional analysis to gain insights into how a product works. It can also be used for discovery and investigation, as well as product improvement. However, marketing analysis is not a reason to perform reverse engineering on a product. Marketing analysis involves studying market trends, customer preferences, and competitor strategies, which can be done through market research and data analysis, rather than reverse engineering.
21.
Read the measurement on the dial caliper to determine the diameter of the metal bar stock below.
Correct Answer
C. 0.437 in
Explanation
The correct answer is 0.437 in. This is because the measurement on the dial caliper corresponds to the diameter of the metal bar stock. The other measurements listed are not the diameter of the bar stock, so they are incorrect.
22.
If the sweep feature was applied to the shape and path pictured below, which figure would most likely result?
Correct Answer
D. Figure 4
Explanation
If the sweep feature was applied to the shape and path pictured below, it would most likely result in Figure 4.
23.
If a single mate constraint is applied between two opposing surfaces in an assembly, how many degrees of freedom will remain between the two parts?
Correct Answer
D. 4
Explanation
When a single mate constraint is applied between two opposing surfaces in an assembly, it restricts the relative movement of the parts in all directions. This means that all six degrees of freedom are eliminated, leaving no freedom for movement. Therefore, the correct answer is 0, not 4.
24.
What is the maximum number of bike frames you could ship in one box, at one time, if the postal service has a twenty pound weight limit per package? The bike frame has the following mass properties: mass = 5.67 lbs; volume = 58.35 in3; and area = 121.87 in2.
Correct Answer
B. 3
Explanation
Based on the given information, the weight limit per package is 20 pounds. The mass of one bike frame is 5.67 lbs. To find the maximum number of bike frames that can be shipped in one box, we divide the weight limit by the mass of one bike frame: 20 lbs / 5.67 lbs = 3.52. Since we cannot have a fraction of a bike frame, the maximum number of bike frames that can be shipped in one box is 3. Therefore, the correct answer is 3.
25.
What information is missing from the annotation of the counterbored hole?
Correct Answer
C. Counterbore Depth
Explanation
In the annotation of the counterbored hole, the information missing is the counterbore depth. The annotation provides details about the hole depth, hole diameter, and counterbore diameter, but it does not specify the depth of the counterbore. The counterbore depth is crucial in determining the depth of the recessed section of the hole where the screw head or bolt will sit. Without this information, it would be impossible to accurately design or manufacture the counterbored hole.