Engineering Design blanket exam

torture

Which of the below is a reason that Excel is useful for engineers?

1. It creates powerful slideshows to present.

2. It allows them to write and format large amounts of text for longer papers and projects.

3. It allows them to do fast analysis of large amounts of data.

3. It allows them to do fast analysis of large amounts of data.

True/False: Rows are referenced with letters, and columns are referenced with numbers.

False

True/False: You CANNOT reference a different sheet in the same workbook in Excel.

false

The following is the order of operations for excel formulas

1. Exponentiation -> Multiplication/Division -> Addition/Subtraction -> Concatenation

2. Exponentiation -> Multiplication/Division -> Concatenation -> Addition/Subtraction

3. Multiplication/Division -> Concatenation -> Exponentiation -> Addition/Subtraction

4. Addition/Subtraction -> Multiplication/Division -> Concatenation -> Exponentiation

Exponentiation -> Multiplication/Division -> Addition/Subtraction -> Concatenation

If I want the sum of the values of the rows two through six in column C, what would I put inside the sum() function?

C2:C6

C2-C6

2C-6C

2C:6C

C2:C6

3 phases of group project

1. ENVIRONMENTAL SENSING: environmental sensor, software (controller)

2. ANALYZING DATA: environmental data

3. ITERATIVE DESIGN OF SENSOR HOUSING: Motor, Sensor housing - (opens closes to expose sensor, attaches to exterior surface

Needs assesment

stage 1

- Who is the customer?

- Identify the needs

- Is this a new design?

- Are there existing artifacts?

- Know where you are going!

Problem Formulation

stage 2

Understand the real problem

- Explicit requirements

- Implicit requirements

- Identify design specifications and constraints

- Identify resources needed

- Resources include time, money, personnel

- Determine technical expertise

Abstraction and Synthesis

stage 3

- Recall related solved problems or experiences

- Gather existing approaches, pertinent theories, equations, and data

- Be creative; brainstorm new ways to use techniques

- Identify multiple solutions to consider.

Analysis

stage 4

- Consider fabrication/implementation requirements

- Eliminate alternatives that don't satisfy criteria

- Be critical - identify strengths and weaknesses

- Construct prototypes of most promising designs

Implementation

stage 5

- Model the solution Computationally and/or physically

- Test and evaluate the solution

- Verify that specifications are met

- Refine solution as needed

list of parts for group project

air quality sensor

breadboard

USB Mini-B Cable

QWIIC Connector

Jumper Wires

Servo Motor W Gear

photodetector

converts the captured light intensity and pattern into an electrical signal(can be weak and cluttered)

what does pm 2.5 mean

the concentration (by mass) of particles that have a diameter equal to or less than 2.5 μm.

colors and order of wires

top to bottom

red- power (electricity)

black - ground (electricity)

blue - clock line (timing of communication)

yellow - data line (communication)

Coefficient of variation (excel Cov)

standard deviation / mean = s / X

accuracy vs percision

percision = repeatable

accuracy = close to goal

r^2 value

how scattered data is

Civic virtues

allow engineers to define and understand their ties and responsibilities to society. The unique influence of engineers on society makes civic virtues integral to engineering character development. These are necessary for engaged, responsible citizens contributing to the common good of society. Three important civic virtues are: deliberation, community awareness, respect for others, Justice, solidarity

Performance virtues

help us respond well to various situations. These are often tested at job interviews with questions like "How do you handle conflicts?". These are often defined as virtues that enable people to manage their lives effectively. Without performance virtues, you are unlikely to be able to live the intellectual, civic, and moral virtues in everyday life. Several performance virtues will help you flourish as an engineer, including: Confidence, determination, leadership, teamwork, perseverance

Intellectual virtues

are necessary for educational and mental growth. These build habits for learning now, in your engineering classes, and lifelong learning as well: open-mindedness, tenacity, creativity, curiosity, autonomy, wonder, attentiveness, thoroughness, critical thinking

Moral Virtues

enable us to act well in situations that require an ethical response: humility, charity, hope, integrity, respect, courage, honesty

FORM

The overall shape and dimensions of the design; the form can also entail the design's weight, color, or aesthetic appearance

fit

The ability of the various parts of the design to interact or connect together within an assembly

FUNCTION

The ability of the design to perform its intended task(s); function criteria can also specify a certain level of repeatability, reliability or efficiency

good technical communication requirements

be clear

be concise

be complete

claim, reasoning, evidence

Numbers and Units in technical writing

When using decimals for values less than 1, include the 0 before the decimal

- For example, use 0.25 not .25

- Keep the number and the unit together (don't split between lines)

- Use superscripts for units when needed - use m 2 not m^2

For laser cutting, you will have the option of using:

You are limited to a total raw material area of one 40" x 32'' sheet of either balsa wood or acrylic.

watercutting

You are limited to a total raw material area of 4 ft 2 , but no longer than 48" in any dimension. HDPE & aluminum sheets

five key elements in creating successful collaborative learning experiences for students

Positive interdependence: belief that one student cannot succeed unless the group succeeds as a whole

- Face-to-face interaction: allows students to discuss their strategies for success

- Individual accountability: everyone is accountable for quality work; everyone has an equal say in team decision making

- Developing teamwork skills: collaborative learning opportunities

- Group processing: self-assessment of the team; emphasize continuous improvement; reflect on their ability to work together

types of group roles

leader/facilitator

Notetaker/Timekeeper

Arbitrator/Monitor

Devil's Advocate

tolerance 3D printer

+- 0.17 mm

text on 3D print size and font

>= 0.2 inches and century gothic

3 demo day tests

1. attachment strength

2. cycle durability and alignment tolerance test

3. airflow test (compare with control data)

minimize print time methods

1. orientation of parts

2. prevent overhangs

3. use shapes that dont require supports

4. breaking parts into many parts