Design Process
A student builds immediately without deciding what the problem actually is. Which EDP step did they skip?
Ask/Define
A student needs to show the exact front, top, and right-side views of an object. Which drawing type should they use?
Orthographic projection
For an automatic hand dryer, name one input and one output.
Input: electricity or hands detected; Output: moving/warm air
A backpack strap keeps tearing at the stitching. Is “the strap tore” the symptom or root cause?
Symptom
What tool should a team use when comparing three design options against the same criteria?
Decision matrix
criterion- hold phone upright for 30 seconds
constraint- one sheet of cardstock/12 inches of tape
Two students draw the same object, but their front and top views do not line up. What is the problem?
The views are inconsistent / do not represent the same object correctly
A refrigerator thermostat stops working. Which system element has most directly failed: input, process, output, or feedback?
Feedback
What evidence would help determine why the backpack strap keeps tearing?
Location of failure, load carried, material/stitch condition, repeated test results, etc.
One design is cheaper, but another is stronger. What engineering concept describes this situation?
Trade-off
A prototype works, but it tips over when touched. What should the team do next and why?
Improve/redesign using evidence from testing
A cube structure is 3 units wide, 2 units deep, and 4 units tall. Which view would best show width and height?
Front view
Why is a car considered an open system?
Matter/energy/information cross the system boundary
A student says, “We should just use thicker material.” Why is that not a strong redesign recommendation yet?
It lacks evidence that material thickness is the actual root cause
A team chooses the most expensive design because “it looks better.” What is missing from their decision?
Evidence-based justification using criteria, constraints, and/or a decision matrix