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Praxis Technology Education study materials
Praxis Technology Education study resources

Praxis Technology Education practice questions

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Question 1Fundamentals of Technology and Technology Education

In the standard engineering design process taught in technology education, which step immediately follows identifying and defining the problem?

  1. Marketing the finished product
  2. Generating possible solutions Correct answer.
  3. Writing the patent application
  4. Building the final prototype

Explanation

Once a problem is defined and constraints are understood, the next stage is brainstorming and generating multiple possible solutions. Prototyping and intellectual-property work come later in the process, after ideas have been evaluated and a design selected.

Question 2Fundamentals of Technology and Technology Education

A technology education teacher wants students to understand how a system transforms inputs into outputs. Which set of terms best describes the universal systems model?

  1. Input, process, output, feedback Correct answer.
  2. Brainstorming, sketching, building, presenting
  3. Drafting, modeling, testing, reporting
  4. Design, patent, manufacture, market

Explanation

The universal systems model describes any system as receiving inputs, transforming them through a process, producing outputs, and using feedback to regulate performance. The other lists describe classroom activities or business stages rather than the systems model itself.

Question 3Fundamentals of Technology and Technology Education

Which statement best describes the relationship between science and technology as taught in technology education?

  1. Technology always advances first, and science merely explains the resulting devices.
  2. Science and technology are identical fields with different names.
  3. Science seeks to explain natural phenomena, while technology seeks to modify the human-made world to meet needs. Correct answer.
  4. Technology is simply applied science and has no independent body of knowledge.

Explanation

Science is generally concerned with understanding the natural world, whereas technology applies knowledge to design and create solutions to human problems. The two fields influence each other but are distinct enterprises with different goals.

Question 4Fundamentals of Technology and Technology Education

A student chooses plywood for a project because it is inexpensive, dimensionally stable, and readily available in large sheets. Which category of design constraint do these considerations primarily represent?

  1. Ergonomic and safety constraints
  2. Material and economic constraints Correct answer.
  3. Ethical and legal constraints
  4. Aesthetic and cultural constraints

Explanation

Cost, availability, and material performance are resource and economic considerations that shape design decisions. Ethical, aesthetic, and ergonomic factors are separate constraint categories that address different aspects of a design.

Question 5Fundamentals of Technology and Technology Education

Which action best demonstrates the technology education principle of safety in the laboratory?

  1. Removing the guard to reach a workpiece more easily
  2. Wearing appropriate eye protection while operating a drill press Correct answer.
  3. Leaving a running machine unattended for a short errand
  4. Storing solvents in unlabeled beverage containers

Explanation

Personal protective equipment such as safety glasses is a basic requirement when operating machines that can eject chips or debris. Guards must remain in place, machines must never be left running unattended, and chemicals must be clearly labeled.

Question 6Fundamentals of Technology and Technology Education

In a closed-loop control system such as a home thermostat, what is the function of the feedback signal?

  1. It permanently disconnects the system once it starts.
  2. It converts electrical energy into mechanical energy.
  3. It supplies the energy needed to run the actuator.
  4. It reports the actual condition back so the system can adjust its operation. Correct answer.

Explanation

Feedback carries information about the actual output back to the controller, which compares it with the desired setpoint and adjusts accordingly. Energy supply and energy conversion are separate functions performed by power sources and actuators.

Question 7Fundamentals of Technology and Technology Education

Which resource is classified as renewable?

  1. Coal
  2. Wind Correct answer.
  3. Petroleum
  4. Natural gas

Explanation

Renewable resources are replenished on a human timescale, and wind is continuously available. Coal, petroleum, and natural gas are fossil fuels formed over millions of years and are consumed far faster than they form.

Question 8Fundamentals of Technology and Technology Education

A teacher asks students to keep a design portfolio that documents sketches, test data, and revisions. What is the primary instructional purpose of this practice?

  1. To guarantee the final product will function correctly
  2. To replace the need for any physical prototyping
  3. To make the iterative nature of design thinking visible and assessable Correct answer.
  4. To provide a finished product for public sale

Explanation

Documenting sketches, data, and revisions makes the iterative design process explicit and gives the teacher evidence of student reasoning. It supports assessment and reflection but cannot guarantee a successful product or substitute for prototyping.

Question 9Fundamentals of Technology and Technology Education

Which statement accurately describes the role of standards and conventions in technical drawing?

  1. They ensure that drawings are interpreted consistently by anyone trained in the standard. Correct answer.
  2. They apply only to hand drafting and not to CAD output.
  3. They are optional personal preferences with no effect on communication.
  4. They exist solely to make drawings more decorative.

Explanation

Standards for line types, dimensioning, and symbols allow a drawing to be read the same way by any trained person. They apply to both manual drafting and CAD, and their purpose is communication rather than decoration.

Question 10Fundamentals of Technology and Technology Education

A team tests three bridge designs and finds that the lightest one carries the greatest load before failure. Which conclusion is most defensible from this result?

  1. The lightest design has the highest strength-to-weight ratio among the three tested. Correct answer.
  2. The test procedure must have been invalid.
  3. Weight has no relationship to load capacity in structures.
  4. The lightest design will always be the strongest possible design.

Explanation

Comparing load capacity relative to weight yields a strength-to-weight ratio, and the lightest bridge carried the most load, so it had the highest ratio among those tested. This result supports only a conclusion about the designs tested, not a universal rule.

Question 11Fundamentals of Technology and Technology Education

Which example best illustrates the concept of a trade-off in technological design?

  1. Ignoring all constraints to pursue an ideal design
  2. Selecting the only material that meets every requirement at the lowest cost
  3. Copying a competitor's product without modification
  4. Choosing a lighter frame material that costs more than a heavier alternative Correct answer.

Explanation

A trade-off occurs when improving one attribute, such as weight, requires accepting a penalty in another, such as cost. Designers weigh competing criteria to reach an acceptable balance rather than optimizing a single factor.

Question 12Fundamentals of Technology and Technology Education

A programmable logic controller (PLC) is used in an automated manufacturing cell. What is its primary function?

  1. Converting raw material into finished parts by cutting
  2. Executing a stored program to control machines and processes based on sensor inputs Correct answer.
  3. Storing finished goods before shipment
  4. Providing structural support for the production line

Explanation

A PLC reads inputs from sensors, runs a stored control program, and drives outputs such as motors and valves. It coordinates automation but does not itself cut material, support structures, or store products.

Question 13Fundamentals of Technology and Technology Education

Which manufacturing approach is characterized by producing large quantities of identical items using specialized equipment and assembly lines?

  1. Mass production Correct answer.
  2. Rapid prototyping
  3. Custom job-shop production
  4. Handcraft production

Explanation

Mass production relies on standardized designs, specialized machinery, and assembly lines to achieve high volume at low unit cost. Job shops, prototyping, and handcrafting are suited to small quantities or one-of-a-kind work.

Question 14Fundamentals of Technology and Technology Education

In the context of technological literacy, which ability is most central to informed citizenship?

  1. Memorizing the internal circuitry of every consumer device
  2. Evaluating the benefits, risks, and trade-offs of technologies when making decisions Correct answer.
  3. Designing professional-grade products independently
  4. Avoiding all use of new technologies

Explanation

Technological literacy includes the capacity to weigh benefits, risks, and trade-offs so citizens can make reasoned decisions about technology policy and use. Memorizing device internals or avoiding technology does not reflect informed judgment.

Question 15Fundamentals of Technology and Technology Education

A product is designed so that its components can be disassembled and reused at the end of its service life. Which design strategy does this represent?

  1. Design for maximum packaging volume
  2. Design for sustainability through material recovery Correct answer.
  3. Design for single-use convenience
  4. Design for planned obsolescence

Explanation

Designing for disassembly and reuse keeps materials in circulation and reduces waste, which are goals of sustainable design. Planned obsolescence, single-use design, and excess packaging all work against material recovery.

Question 16Fundamentals of Technology and Technology Education

Which statement correctly distinguishes an open-loop control system from a closed-loop control system?

  1. An open-loop system does not use feedback to compare actual output with the desired output. Correct answer.
  2. A closed-loop system operates without any controller.
  3. A closed-loop system cannot correct for disturbances.
  4. An open-loop system requires a sensor to measure its output continuously.

Explanation

An open-loop system executes a predetermined sequence without measuring its output, while a closed-loop system uses feedback to compare actual and desired results and correct errors. Sensors and controllers are characteristic of closed-loop operation.

Question 17Fundamentals of Technology and Technology Education

Which technological development is most directly associated with the shift from an agricultural to an industrial society?

  1. The development of genetic engineering
  2. The widespread adoption of smartphones
  3. The mechanization of production powered by new energy sources Correct answer.
  4. The invention of the World Wide Web

Explanation

The Industrial Revolution was driven by mechanized production and new power sources such as steam, which transformed manufacturing and society. Smartphones, the web, and genetic engineering belong to later information and biotechnology eras.

Question 18Fundamentals of Technology and Technology Education

Which practice best reflects universal design for learning in a technology education classroom?

  1. Limiting instruction to one mode of presentation
  2. Offering multiple ways for students to demonstrate understanding, such as sketches, CAD models, or oral explanations Correct answer.
  3. Using a single assessment format for every student regardless of need
  4. Requiring all students to follow identical steps at the same pace

Explanation

Universal design for learning provides multiple means of representation, engagement, and expression so diverse learners can access content and show what they know. Rigid single-format instruction does the opposite.

Question 19Fundamentals of Technology and Technology Education

A student uses a spreadsheet to record measurements, calculate averages, and graph results from a materials test. Which technological literacy outcome does this best demonstrate?

  1. Understanding the thermodynamics of material failure
  2. Applying welding safety procedures
  3. Using information and communication technology to organize and analyze data Correct answer.
  4. Mastering manual drafting conventions

Explanation

Spreadsheets are information and communication technology tools used to manage, compute, and visualize data, which is a core technology education outcome. Thermodynamics, drafting conventions, and welding safety involve different knowledge and skills.

Question 20Fundamentals of Technology and Technology Education

A teacher wants students to analyze the environmental impact of a product across its entire life. Which approach is most appropriate?

  1. Measuring only the energy used during manufacturing
  2. Evaluating only the product's appearance
  3. Conducting a life cycle assessment from raw material extraction through disposal or recycling Correct answer.
  4. Examining only the product's retail packaging

Explanation

Life cycle assessment examines impacts at every stage, including material extraction, manufacturing, distribution, use, and end-of-life. Focusing on a single stage or on appearance gives an incomplete and misleading picture.

Question 21Fundamentals of Technology and Technology Education

Two gear trains transmit the same input power. Train A uses small gears turning rapidly, while Train B uses large gears turning slowly. Which statement best compares them?

  1. Gear size has no effect on speed or torque.
  2. Train B produces both higher speed and higher torque than Train A.
  3. Train A produces both higher speed and higher torque than Train B.
  4. Train A trades higher speed for lower torque, while Train B trades lower speed for higher torque. Correct answer.

Explanation

In mechanical power transmission, speed and torque trade off inversely when power is held constant, so smaller driving gears yield higher speed and lower torque. Larger gears produce the reverse relationship, which is why gear trains are selected for specific speed-torque needs.

Question 22Fundamentals of Technology and Technology Education

A design team must select a material for a bicycle frame that balances stiffness, weight, cost, and recyclability. Which decision-making method is most appropriate for comparing alternatives against multiple weighted criteria?

  1. Selecting the material a single team member prefers
  2. Ignoring the criteria and choosing randomly
  3. Choosing the first material that meets the lowest price
  4. A weighted decision matrix scoring each alternative against the criteria Correct answer.

Explanation

A weighted decision matrix allows a team to score each alternative against multiple criteria whose relative importance is reflected in the weights. This makes the comparison transparent and defensible, unlike arbitrary or single-factor selection.

Question 23Fundamentals of Technology and Technology Education

A school adopts a 3D printer for prototyping. Which statement best explains why additive manufacturing is well suited to the design process?

  1. It is always faster than injection molding for producing thousands of identical parts.
  2. It requires no digital model or design data.
  3. It can produce complex one-off geometries quickly, supporting rapid iteration of designs. Correct answer.
  4. It eliminates the need for testing prototypes.

Explanation

Additive manufacturing builds parts layer by layer, enabling complex one-off geometries without dedicated tooling, which accelerates iterative prototyping. It is not economical for high-volume identical parts and still requires digital models and physical testing.

Question 24Fundamentals of Technology and Technology Education

A district asks a technology teacher to justify a new course using research on how students learn design. Which rationale is best supported by the nature of design problems?

  1. Ill-structured design problems develop students' ability to frame problems and justify decisions under constraints. Correct answer.
  2. Design problems remove the need for collaboration and communication.
  3. Design problems require no iteration once a plan is written.
  4. Design problems have a single correct answer that can be graded by an answer key.

Explanation

Design problems are typically ill-structured, with multiple viable solutions and competing constraints, so students must frame problems, weigh options, and justify choices. This contrasts with well-structured problems that have a single correct answer.

Question 25Fundamentals of Technology and Technology Education

Which sequence correctly orders the steps of a systematic technological design process?

  1. Define the problem, generate ideas, build and test a prototype, evaluate and refine Correct answer.
  2. Generate ideas, evaluate, define the problem, build and test
  3. Evaluate, build and test, generate ideas, define the problem
  4. Build a prototype, define the problem, evaluate, generate ideas

Explanation

A systematic design process begins by clarifying the problem and constraints, then moves to idea generation, prototyping, and iterative evaluation. Testing before the problem is defined wastes effort because criteria are unknown. Evaluation drives refinement, producing a loop rather than a one-time step.

Question 26Fundamentals of Technology and Technology Education

A technology education standard emphasizes that students should understand the relationships among technology, society, and the environment. Which classroom activity best develops that understanding?

  1. Memorizing the names of hand tools and their parts
  2. Comparing how the adoption of a technology changed work and resource use in a community Correct answer.
  3. Practicing a single woodworking joint until it is produced to tolerance
  4. Completing a worksheet on the metric prefixes used in measurement

Explanation

The technology-society-environment theme requires students to examine consequences and interactions, not just technical skill. Comparing how an adopted technology reshaped work and resource use asks students to reason about social and environmental effects. Tool identification, joint practice, and prefix drills build technical knowledge but do not address that relationship.

Question 27Fundamentals of Technology and Technology Education

Which statement best describes the difference between science and technology as fields of study?

  1. Science relies on measurement, while technology relies only on opinion
  2. Science is applied only in laboratories, while technology is applied only in factories
  3. Science produces artifacts, while technology produces only theories
  4. Science seeks explanations of natural phenomena, while technology seeks solutions to human wants and needs Correct answer.

Explanation

Science is generally directed at understanding the natural world, whereas technology is directed at creating or modifying systems, products, and processes to meet human needs. Both use measurement and systematic methods, so the distinction is about purpose rather than tools or location.

Question 28Fundamentals of Technology and Technology Education

A student calculates that a lever with an effort arm of 60 cm and a resistance arm of 15 cm can lift a load with a mechanical advantage of 4. Which statement correctly interprets this result?

  1. The lever multiplies the applied effort force by a factor of four Correct answer.
  2. The lever reduces the distance the load moves by a factor of four
  3. The lever requires four times as much effort force as the load
  4. The lever eliminates friction from the system

Explanation

Mechanical advantage is the ratio of effort arm to resistance arm, and it describes how much the machine multiplies the applied force. An advantage of 4 means an effort of 1 unit can balance a load of 4 units, at the cost of moving the effort through a greater distance. It says nothing about friction, and it does not increase the required effort.

Question 29Fundamentals of Technology and Technology Education

Which statement accurately describes the purpose of a formative assessment in a technology education course?

  1. It certifies that a student has met licensure requirements
  2. It ranks students against a national normative sample
  3. It assigns a final course grade after all projects are complete
  4. It monitors student progress during learning so instruction can be adjusted Correct answer.

Explanation

Formative assessment is conducted during instruction to reveal what students understand and where they need support, allowing the teacher to adjust teaching. Summative assessment, by contrast, occurs at the end to judge achievement. Norm-referenced ranking and licensure certification serve different purposes entirely.

Question 30Fundamentals of Technology and Technology Education

In a small wind-turbine project, students measure voltage output at several blade angles and record the results. Which practice most improves the trustworthiness of their conclusion?

  1. Discarding results that do not match the team's prediction
  2. Testing each angle once and selecting the highest reading
  3. Repeating trials at each angle and reporting the average and spread Correct answer.
  4. Changing several variables at once to save time

Explanation

Reliability improves when each condition is tested multiple times and both central tendency and variability are reported. Single trials cannot reveal random error, and changing multiple variables confounds the effect of blade angle. Removing inconvenient data introduces bias.

Question 31Fundamentals of Technology and Technology Education

Which statement best explains why the development of interchangeable parts was significant in the history of manufacturing?

  1. It made mass production impossible because parts were unique
  2. It required every product to be handmade by a single craftsperson
  3. It eliminated the need for any measurement during production
  4. It allowed individual components to be swapped without custom fitting, enabling faster assembly and repair Correct answer.

Explanation

Interchangeable parts are manufactured to tolerances so that any component fits any assembly of the same design. This standardization supported rapid assembly, simplified repair, and made mass production feasible. It increased rather than reduced the importance of precise measurement.

Question 32Fundamentals of Technology and Technology Education

A teacher wants students to understand how a product's cost, performance, and environmental impact interact before finalizing a design. Which tool is most appropriate?

  1. A bill of materials listing only purchased components
  2. A Gantt chart tracking project deadlines
  3. A decision matrix that scores alternatives against weighted criteria Correct answer.
  4. A safety data sheet for a single chemical

Explanation

A decision matrix lets a team compare design alternatives against multiple weighted criteria, making trade-offs explicit and defensible. It supports reasoning about cost, performance, and environmental impact together. A bill of materials, schedule, and safety data sheet each serve narrower purposes.

Question 33Fundamentals of Technology and Technology Education

Which statement best describes the function of a resistor in a simple direct-current circuit?

  1. It converts alternating current to direct current
  2. It stores charge for later release
  3. It opposes current flow and converts electrical energy to heat Correct answer.
  4. It amplifies the voltage of a signal

Explanation

A resistor limits or opposes current in a circuit according to Ohm's law and dissipates energy as heat. Charge storage is the role of a capacitor, amplification is performed by active devices such as transistors, and rectification is done by diodes.

Question 34Fundamentals of Technology and Technology Education

A team must join two aluminum plates that will be disassembled for maintenance. Which fastening method best meets that requirement?

  1. Bolting the plates with threaded fasteners Correct answer.
  2. Riveting the plates permanently
  3. Welding the plates along the seam
  4. Gluing the plates with structural adhesive

Explanation

Threaded fasteners such as bolts allow joints to be assembled and taken apart repeatedly without destroying the components. Riveting, welding, and structural adhesive all create permanent or semi-permanent joints that are difficult or impossible to reverse cleanly.

Question 35Fundamentals of Technology and Technology Education

Which statement correctly describes the relationship between a technical drawing's scale and its dimensions?

  1. Dimensions may be omitted when a drawing is drawn full size
  2. Dimensions on a scaled drawing state actual part size regardless of the drawing scale Correct answer.
  3. Scale applies only to pictorial drawings, not orthographic views
  4. A drawing at 1:2 scale means every dimension should be halved by the reader

Explanation

In standard technical drawing practice, dimensions always state the true size of the feature, while the scale only affects how the drawing is reproduced on paper. A 1:2 drawing is half-size graphically, but the numbers remain actual size. Dimensions are required regardless of scale or view type.

Question 36Fundamentals of Technology and Technology Education

Which statement best explains why a closed-loop control system can correct for disturbances that an open-loop system cannot?

  1. It compares measured output to a setpoint and adjusts the input accordingly Correct answer.
  2. It removes the need for any sensor in the system
  3. It uses a more powerful actuator than an open-loop system
  4. It runs only in one direction without any comparison

Explanation

A closed-loop system continuously senses its output, compares it with the desired setpoint, and uses the error to adjust the input, which allows correction when conditions change. An open-loop system executes a predetermined action without checking results. Actuator power and sensor presence are not what define the distinction.

Question 37Fundamentals of Technology and Technology Education

A student argues that a new device is automatically good for society because it uses advanced technology. Which reasoning error does this argument represent?

  1. Confusing an open system with a closed system
  2. Using an inappropriate measurement system
  3. Assuming that technological progress always produces beneficial outcomes Correct answer.
  4. Applying the design process without defining criteria

Explanation

Technological determinism, the assumption that newer technology is inherently beneficial, ignores that outcomes depend on context, use, and consequences. Evaluating a device requires weighing benefits, risks, and effects on people and the environment. The other options describe procedural or conceptual errors unrelated to this claim.

Question 38Fundamentals of Technology and Technology Education

A teacher plans a unit in which students investigate how a community's transportation system affects access to jobs. Which approach most directly integrates technology education with social studies?

  1. Having students practice soldering electrical connections
  2. Having students calculate the mechanical advantage of a pulley
  3. Having students memorize the parts of an internal combustion engine
  4. Having students map transit routes and analyze which neighborhoods gain or lose access Correct answer.

Explanation

Mapping transit routes and analyzing access connects a technological system to social and economic consequences, which is the core of the technology-society-environment theme. The other activities build technical skills but do not examine how a system affects people and communities.

Question 39Fundamentals of Technology and Technology Education

A school wants students to evaluate the sustainability of a product's material choices. Which pair of considerations is most central to that evaluation?

  1. Brand reputation and advertising budget
  2. Energy use and emissions across extraction, processing, use, and disposal Correct answer.
  3. Number of parts and assembly time
  4. Color options and packaging graphics

Explanation

Sustainability evaluation of materials requires examining impacts across the product life cycle, including energy consumption and emissions from extraction through disposal. Brand, cost, part count, and appearance do not capture environmental burden. Life-cycle thinking is the framework that makes these impacts comparable.

Question 40Fundamentals of Technology and Technology Education

Which statement best explains why a prototype is built early in the design process rather than after all decisions are final?

  1. A prototype replaces the need for testing and evaluation
  2. A prototype is required only for final presentation to clients
  3. A prototype provides physical or digital evidence that reveals problems while changes are still inexpensive Correct answer.
  4. A prototype guarantees the design will meet every criterion

Explanation

Early prototypes generate evidence about how a design performs, exposing flaws while revisions remain cheap and fast. They do not guarantee success or eliminate testing; instead they inform iteration. Waiting until decisions are fixed removes the main benefit of prototyping.

Question 41Technological Design and Problem Solving

In the technological design process, what is the primary purpose of writing a problem statement before generating solutions?

  1. To document the final manufacturing cost of the product
  2. To rank team members by their technical skill
  3. To define the need, users, and constraints in a clear, shared form Correct answer.
  4. To list every patent that might apply to the idea

Explanation

A problem statement frames the design brief by naming the need, the intended user, and the boundaries such as budget, time, and safety. This shared framing lets a team judge whether later ideas actually solve the right problem. Costing and patent work come later in the process.

Question 42Technological Design and Problem Solving

A design team builds a cardboard and tape model at one-quarter scale to check how users reach for controls. Which type of model are they using?

  1. A working drawing
  2. A physical prototype Correct answer.
  3. A mathematical model
  4. A computer simulation

Explanation

A physical prototype is a tangible build used to test form, fit, or user interaction. Cardboard mock-ups are a classic low-fidelity physical prototype because they are quick and cheap. Simulations and drawings are representations rather than constructed objects.

Question 43Technological Design and Problem Solving

Which statement best describes a design constraint rather than a design criterion?

  1. The device must operate on a single 9-volt battery Correct answer.
  2. The device should feel comfortable during long use
  3. The device should look modern and appealing
  4. The device should be easy for new users to learn

Explanation

A constraint is a fixed limit the solution must satisfy, such as a specified power source. Criteria are desired qualities used to compare competing solutions and are often traded off. Comfort, appearance, and ease of learning are judged relative to one another.

Question 44Technological Design and Problem Solving

Why is brainstorming most effective when evaluation of ideas is deliberately postponed?

  1. It shortens the meeting so fewer ideas are recorded
  2. It guarantees that the first idea will be selected
  3. It removes the need to define criteria later
  4. It encourages quantity and unusual combinations before judgment Correct answer.

Explanation

Deferring judgment lets participants build on half-formed ideas without fear of early criticism, which increases the number and variety of options. Criteria are still applied afterward to screen the list. Early evaluation tends to narrow thinking prematurely.

Question 45Technological Design and Problem Solving

On a technical drawing, what does an orthographic projection provide that an isometric sketch does not?

  1. A list of materials and fasteners
  2. A colored rendering of surface finish
  3. Separate true-shape views of each principal face Correct answer.
  4. A three-dimensional pictorial view for clients

Explanation

Orthographic projection shows each principal face in its own view, so shapes and dimensions appear true size where the view is perpendicular to the feature. Isometric views are pictorial and foreshorten edges. Neither view type automatically supplies a parts list.

Question 46Technological Design and Problem Solving

A team must choose among four backpack designs and wants a transparent, repeatable decision. Which tool fits best?

  1. A decision matrix that weights criteria and scores each design Correct answer.
  2. A tolerance stack-up calculation
  3. A Gantt chart of the production schedule
  4. A patent search report

Explanation

A weighted decision matrix multiplies criterion weights by option scores and totals them, making trade-offs visible and repeatable. Gantt charts schedule tasks, tolerance analysis checks dimensional fit, and patent reports address intellectual property. Only the matrix compares whole designs against weighted criteria.

Question 47Technological Design and Problem Solving

Which action is the clearest example of iterative refinement in technological design?

  1. Writing the final report before building anything
  2. Copying a competitor's finished product exactly
  3. Submitting the first concept without testing it
  4. Testing a prototype, revising the weak feature, and retesting Correct answer.

Explanation

Iteration means cycling through test, evaluate, and revise so each version improves on evidence from the last. Retesting after a change is what closes the loop. Skipping testing or copying a product provides no feedback cycle.

Question 48Technological Design and Problem Solving

During which stage of technological design is a bill of materials most directly produced?

  1. Market research
  2. Problem definition
  3. Idea generation
  4. Detailed design and documentation Correct answer.

Explanation

A bill of materials lists every part, quantity, and material needed to build the design, which requires the detail decisions made during detailed design. It follows concept selection rather than preceding it. Market research and ideation do not yet fix the parts.

Question 49Technological Design and Problem Solving

A prototype door latch fails after 200 cycles when 5,000 are required. What is the most appropriate next design step?

  1. Identify the failure mode and revise the latch geometry or material Correct answer.
  2. Raise the price of the product to cover warranty costs
  3. Declare the design complete because it worked twice
  4. Reduce the required cycle count in the specification

Explanation

A test failure is feedback that should drive analysis of how the part failed, followed by a targeted design change and retest. Changing the requirement or the price does not address the physical cause. The specification reflects user needs and should not be quietly weakened.

Question 50Technological Design and Problem Solving

A weighted decision matrix gives Design A a total of 7.4 and Design B a total of 7.6. Which conclusion is best supported?

  1. The matrix cannot compare designs with different scores
  2. The two designs are identical in performance
  3. Design A is preferred because it scored first
  4. Design B is preferred under the chosen criteria and weights Correct answer.

Explanation

The higher weighted total indicates the option that best satisfies the criteria as weighted by the team. The margin is small, so the team may want to check weight sensitivity, but the stated result favors Design B. A decision matrix is designed precisely to compare differing scores.