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Engineering: explore STEM content (page 11 of 27) · openstem

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Engineering Engineering groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Engineering

Circuits, mechanics, materials and design on openstem — flashcards, notes, quizzes, sketches and flowcharts shared by the community. Study free, or clone anything into your library.

Content Groups1

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Flowchart10 objects

Engineering

Engineering · L1 · Strong Shapes: Triangles vs Squares · flowchart

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Engineering · L1 · Strong Shapes: Triangles vs Squares · flowchart

Note~473 words · 2 min

The workhorse of industrial feedback control. One error signal, three ways of reacting to it. The error is e(t) = setpoint − measured output. Everything below acts on that. Effect of each gain Ziegler-Nichols tuning (ultimate gain method) A

Engineering

Engineering · L4 · PID control: tuning, anti-windup, and practical design

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Engineering · L4 · PID control: tuning, anti-windup, and practical design

Flashcards10 cards

What three parts does every lever have?1 / 10

A fulcrum (the fixed pivot point), an effort (the force you apply), and a load (the weight or resistance you are trying to move).

Engineering

Engineering · L2 · Levers: Three Classes

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Engineering · L2 · Levers: Three Classes

Flowchart5 objects

Engineering

Engineering · L2 · Levers: Three Classes Quiz · flowchart

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Engineering · L2 · Levers: Three Classes Quiz · flowchart

Flashcards7 cards

What formula gives the center of mass of two point masses along a line?1 / 7

The weighted average of their positions: x_cm = (m₁x₁ + m₂x₂) / (m₁ + m₂). Each mass's position is weighted by how much mass it carries, so heavier masses pull the center of mass toward themselves.

Engineering

Engineering · L3 · Center of Mass & Stability

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Engineering · L3 · Center of Mass & Stability

Flashcards10 cards

What is a lever?1 / 10

A lever is a stiff bar or board that can tip up and down around a fixed point. Pushing down on one end lifts the other end up.

Engineering

Engineering · L1 · Levers & Seesaws

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Engineering · L1 · Levers & Seesaws

Flowchart11 objects

Engineering

Engineering · L1 · Squeezing Trapped Air

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Engineering · L1 · Squeezing Trapped Air

Note~321 words · 2 min

Reynolds decomposition Split every field into a time-mean and a fluctuation about it. The mean is what you want to predict; the fluctuation is what makes it hard. Substitute into incompressible Navier-Stokes and time-average. Everything lin

Engineering

Engineering · L5 · Turbulence: Reynolds Decomposition & Energy Cascade

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Engineering · L5 · Turbulence: Reynolds Decomposition & Energy Cascade

Flowchart9 objects

Engineering

Engineering · L1 · Building Together: Teams of Engineers · flowchart

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Engineering · L1 · Building Together: Teams of Engineers · flowchart

Collection4 items

01Engineering · L3 · Buoyancy & Archimedes' Principle

02Engineering · L3 · Buoyancy & Archimedes' Principle

03Engineering · L3 · Predicting Float or Sink

+1 more

Engineering

Engineering · L3 · Buoyancy & Archimedes' Principle

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Engineering · L3 · Buoyancy & Archimedes' Principle

Flowchart7 objects

Engineering

Engineering · L1 · How a Bulb Turns Electricity Into Light · flowchart

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Engineering · L1 · How a Bulb Turns Electricity Into Light · flowchart

Flowchart11 objects

Engineering

Engineering · L2 · Capacitors: Quick Storage, Quick Release · flowchart

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Engineering · L2 · Capacitors: Quick Storage, Quick Release · flowchart

Flowchart7 objects

Engineering

Engineering · L1 · Materials That Change With Heat Quiz · flowchart

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Engineering · L1 · Materials That Change With Heat Quiz · flowchart

Note~138 words · 1 min

It's a loop, not a line Nobody gets it right first time. The cycle assumes that. The two habits that separate engineering from guessing

Engineering

Engineering · L2 · The Engineering Design Cycle

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Engineering · L2 · The Engineering Design Cycle

Flowchart5 objects

Engineering

Engineering · L1 · Air Takes Up Space Quiz · flowchart

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Engineering · L1 · Air Takes Up Space Quiz · flowchart

Flowchart13 objects

Engineering

Engineering · L2 · How a Hydraulic Car Jack Multiplies Force

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Engineering · L2 · How a Hydraulic Car Jack Multiplies Force

Flashcards12 cards

What are the two conditions for static equilibrium of a rigid body?1 / 12

ΣF = 0 (net force is zero in all directions) AND Στ = 0 (net torque is zero about any point). Both must be satisfied simultaneously. In 2D this gives three scalar equations: ΣFx = 0, ΣFy = 0, ΣM_A = 0.

Engineering

Engineering · L4 · Statics — Equilibrium & Free-Body Analysis

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Engineering · L4 · Statics — Equilibrium & Free-Body Analysis

Flowchart9 objects

Engineering

Engineering · L2 · Batteries in Series vs Parallel · flowchart

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Engineering · L2 · Batteries in Series vs Parallel · flowchart

Collection4 items

01Engineering · L1 · Trade-Offs

02Engineering · L1 · Trade-Offs: More of One, Less of Another

03Engineering · L1 · Weighing a Trade-Off

+1 more

Engineering

Engineering · L1 · Trade-Offs

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Engineering · L1 · Trade-Offs

Flowchart7 objects

Engineering

Engineering · L3 · Viscosity & Flow Regimes · flowchart

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Engineering · L3 · Viscosity & Flow Regimes · flowchart

Flowchart7 objects

Engineering

Engineering · L3 · Digital Logic Gates · flowchart

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Engineering · L3 · Digital Logic Gates · flowchart

Flashcards9 cards

What does a motor do?1 / 9

A motor turns electricity into spinning motion. Give it power, and it spins!

Engineering

Engineering · L1 · Fans & Motors

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Engineering · L1 · Fans & Motors

Flashcards11 cards

State Ohm's Law.1 / 11

V = IR — voltage equals current times resistance.

Engineering

Engineering · L3 · Ohm's Law & Power

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Engineering · L3 · Ohm's Law & Power

Collection4 items

01Engineering · L3 · Pumps & Head

02Engineering · L3 · Pumps, Head, and Matching a Pump to a Job

03Engineering · L3 · Matching a Pump's Curve to a Job

+1 more

Engineering

Engineering · L3 · Pumps & Head

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Engineering · L3 · Pumps & Head

Flowchart11 objects

Engineering

Engineering · L2 · A Product's Material Life Cycle

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Engineering · L2 · A Product's Material Life Cycle

Flashcards12 cards

State KVL and KCL and their physical basis.1 / 12

KVL (Kirchhoff's Voltage Law): the sum of voltages around any closed loop is zero — based on conservation of energy. KCL (Kirchhoff's Current Law): the sum of currents entering a node equals the sum leaving — based on conservation of charge. Together they are the foundation of all circuit analysis.

Engineering