PLTW Introduction to Engineering Design (IED)
Final Exam
Questions and Answers | Latest Update| Pass Guaranteed
Q1. What is the first step of the engineering design process?
Answer: Identify/define the problem.
Rationale: Every design effort begins by clearly stating the problem to be
solved, including constraints and criteria, before any brainstorming or research
takes place.
Q2. What is the purpose of brainstorming in the design process?
Answer: To generate as many possible solutions to a problem as possible
without judgment.
Rationale: Brainstorming separates idea generation from idea evaluation so
that quantity and creativity of ideas are not stifled by early criticism.
Q3. What is a design constraint?
Answer: A limitation placed on a design, such as cost, size, time, or material.
Rationale: Constraints define the boundaries within which a solution must
work, narrowing the field of acceptable solutions.
Q4. What is a design criterion?
Answer: A standard or requirement that a successful solution must meet.
Rationale: Criteria are used to judge whether a design solution is successful,
such as required performance or safety standards.
,Q5. What is the purpose of a decision matrix?
Answer: To objectively compare multiple design solutions against weighted
criteria to select the best option.
Rationale: A decision matrix assigns numeric scores and weights to criteria so
that subjective preferences are reduced and the highest-scoring design can be
identified.
Q6. What is an engineering notebook used for?
Answer: To document the design process, ideas, calculations, and decisions in
a permanent, dated, and signed record.
Rationale: The notebook provides a legal record of invention and a
chronological trail of the design process for review and protection of
intellectual property.
Q7. Why should engineering notebook entries be signed and dated, including by
a witness?
Answer: To establish a legal record of when an idea was conceived, which can
be important for patent claims.
Rationale: Patent law relies on proof of the date of invention; a witnessed,
dated entry provides evidence that can be used to defend intellectual property
rights.
Q8. What is iteration in the design process?
Answer: Repeating steps of the design process to refine and improve a
solution.
Rationale: Design is rarely linear; testing often reveals flaws, requiring
engineers to revisit earlier steps and improve the solution before a final version
is reached.
, Q9. What is the difference between a problem statement and a design
statement?
Answer: A problem statement describes what needs to be solved, while a
design statement describes what will be built to solve it.
Rationale: The problem statement frames the need without proposing a
solution, whereas the design statement commits to a specific approach going
forward.
Q10. Why is it important to test and evaluate a prototype?
Answer: To determine whether the design meets the criteria and constraints
and to identify needed improvements.
Rationale: Testing provides objective data on performance, revealing whether
the design actually satisfies requirements before final production.
Q11. What is isometric sketching?
Answer: A 3D pictorial sketching technique in which the three axes are drawn
120 degrees apart.
Rationale: Isometric sketches show height, width, and depth simultaneously
using three axes spaced equally at 120 degrees, giving a realistic 3D view
without perspective distortion.
Q12. In isometric sketching, along which lines are true measurements made?
Answer: Along lines parallel to the isometric axes.
Rationale: Only lines parallel to the three isometric axes retain true length;
angled or curved lines must be plotted using coordinate points rather than
measured directly.
Q13. What is oblique sketching?
Answer: A pictorial sketching technique where the front face is drawn true size
and shape, and depth is drawn at an angle, often 45 degrees.
Rationale: Oblique sketches keep the front face undistorted for accuracy while
receding lines represent depth, making it useful when the front view contains
important detail like circles.
Final Exam
Questions and Answers | Latest Update| Pass Guaranteed
Q1. What is the first step of the engineering design process?
Answer: Identify/define the problem.
Rationale: Every design effort begins by clearly stating the problem to be
solved, including constraints and criteria, before any brainstorming or research
takes place.
Q2. What is the purpose of brainstorming in the design process?
Answer: To generate as many possible solutions to a problem as possible
without judgment.
Rationale: Brainstorming separates idea generation from idea evaluation so
that quantity and creativity of ideas are not stifled by early criticism.
Q3. What is a design constraint?
Answer: A limitation placed on a design, such as cost, size, time, or material.
Rationale: Constraints define the boundaries within which a solution must
work, narrowing the field of acceptable solutions.
Q4. What is a design criterion?
Answer: A standard or requirement that a successful solution must meet.
Rationale: Criteria are used to judge whether a design solution is successful,
such as required performance or safety standards.
,Q5. What is the purpose of a decision matrix?
Answer: To objectively compare multiple design solutions against weighted
criteria to select the best option.
Rationale: A decision matrix assigns numeric scores and weights to criteria so
that subjective preferences are reduced and the highest-scoring design can be
identified.
Q6. What is an engineering notebook used for?
Answer: To document the design process, ideas, calculations, and decisions in
a permanent, dated, and signed record.
Rationale: The notebook provides a legal record of invention and a
chronological trail of the design process for review and protection of
intellectual property.
Q7. Why should engineering notebook entries be signed and dated, including by
a witness?
Answer: To establish a legal record of when an idea was conceived, which can
be important for patent claims.
Rationale: Patent law relies on proof of the date of invention; a witnessed,
dated entry provides evidence that can be used to defend intellectual property
rights.
Q8. What is iteration in the design process?
Answer: Repeating steps of the design process to refine and improve a
solution.
Rationale: Design is rarely linear; testing often reveals flaws, requiring
engineers to revisit earlier steps and improve the solution before a final version
is reached.
, Q9. What is the difference between a problem statement and a design
statement?
Answer: A problem statement describes what needs to be solved, while a
design statement describes what will be built to solve it.
Rationale: The problem statement frames the need without proposing a
solution, whereas the design statement commits to a specific approach going
forward.
Q10. Why is it important to test and evaluate a prototype?
Answer: To determine whether the design meets the criteria and constraints
and to identify needed improvements.
Rationale: Testing provides objective data on performance, revealing whether
the design actually satisfies requirements before final production.
Q11. What is isometric sketching?
Answer: A 3D pictorial sketching technique in which the three axes are drawn
120 degrees apart.
Rationale: Isometric sketches show height, width, and depth simultaneously
using three axes spaced equally at 120 degrees, giving a realistic 3D view
without perspective distortion.
Q12. In isometric sketching, along which lines are true measurements made?
Answer: Along lines parallel to the isometric axes.
Rationale: Only lines parallel to the three isometric axes retain true length;
angled or curved lines must be plotted using coordinate points rather than
measured directly.
Q13. What is oblique sketching?
Answer: A pictorial sketching technique where the front face is drawn true size
and shape, and depth is drawn at an angle, often 45 degrees.
Rationale: Oblique sketches keep the front face undistorted for accuracy while
receding lines represent depth, making it useful when the front view contains
important detail like circles.
