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Engineering: explore STEM content (page 15 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.

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Flashcards8 cards

What does it mean for an energy source to be 'renewable'?1 / 8

A renewable energy source is one that naturally refills itself and does not run out — like sunlight, wind, and moving water. The sun keeps shining and the wind keeps blowing no matter how much we use.

Engineering

Engineering · L2 · Renewable Energy Basics

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Engineering · L2 · Renewable Energy Basics

Flowchart18 objects

Engineering

Engineering · L3 · Building a Project Budget

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Engineering · L3 · Building a Project Budget

Flowchart7 objects

Engineering

Engineering · L3 · Predicting Float or Sink

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Engineering · L3 · Predicting Float or Sink

Flowchart9 objects

Engineering

Engineering · L1 · How a Sail Catches the Wind

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Engineering · L1 · How a Sail Catches the Wind

Flowchart5 objects

Engineering

Engineering · L1 · Ramps & Wedges: Sloped Simple Machines · flowchart

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Engineering · L1 · Ramps & Wedges: Sloped Simple Machines · flowchart

Flashcards8 cards

What does it mean for a material to be 'strong'?1 / 8

A strong material can carry a heavy load or be pulled hard without breaking or snapping.

Engineering

Engineering · L2 · Strength and Flexibility

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Engineering · L2 · Strength and Flexibility

Flowchart15 objects

Engineering

Engineering · L1 · Weighing a Trade-Off

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Engineering · L1 · Weighing a Trade-Off

Quiz6 questions

What creates a magnetic field around a wire?

AElectric current flowing through itBSunlight shining on itCHeating the wire with a flameDPainting the wire a different color

Engineering

Engineering · L2 · Electromagnets Quiz

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Engineering · L2 · Electromagnets Quiz

Quiz6 questions

What is a trade-off?

AWhen getting more of one good thing means getting less of anotherBA tool used to measure weightCA machine that trades toysDA perfect design with no downsides

Engineering

Engineering · L1 · Trade-Offs Quiz

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Engineering · L1 · Trade-Offs Quiz

Quiz5 questions

Why is it much easier to push a loaded wagon on wheels than to drag the same load on the ground?

AWheels roll, which has far less friction than dragging and scrapingBWheels make the load lighterCWheels are always made of metalDDragging uses no friction at all

Engineering

Engineering · L1 · Wheels & Axles Quiz

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Engineering · L1 · Wheels & Axles Quiz

Quiz3 questions

In the Galerkin FEM, the trial and test function spaces are:

ADifferent — trial functions are polynomials, test functions are Dirac deltasBChosen adaptively from the residualCIdentical finite-dimensional subspacesDInfinite-dimensional Sobolev spaces

Engineering

Engineering · L5 · Finite Element Method

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Engineering · L5 · Finite Element Method

Collection4 items

01Engineering · L2 · Recycling & Material Life Cycles

02Engineering · L2 · Recycling & Material Life Cycles

03Engineering · L2 · A Product's Material Life Cycle

+1 more

Engineering

Engineering · L2 · Recycling & Material Life Cycles

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Engineering · L2 · Recycling & Material Life Cycles

Collection4 items

01Engineering · L3 · Design Trade-offs

02Engineering · L3 · Design Trade-offs

03Engineering · L3 · Weighing Cost vs Performance

+1 more

Engineering

Engineering · L3 · Design Trade-offs

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Engineering · L3 · Design Trade-offs

Flowchart6 objects

Engineering

Engineering · L3 · Beam Bending & Moment of Inertia · flowchart

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Engineering · L3 · Beam Bending & Moment of Inertia · flowchart

Note~220 words · 1 min

Electricity in, light out A bulb has one job: turn electricity into light. Flip the switch, electricity flows, the bulb glows. No electricity, no light. Two ways to glow Inside an old bulb is a filament: a wire so thin that electricity stru

Engineering

Engineering · L1 · How a Bulb Turns Electricity Into Light

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Engineering · L1 · How a Bulb Turns Electricity Into Light

Quiz6 questions

A 10 mm-diameter bolt carries 5000 N in single shear. What is the shear stress?

A≈ 500 MPaB≈ 63.7 MPaC≈ 31.8 MPaD≈ 127.3 MPa

Engineering

Engineering · L3 · Shear Stress

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Engineering · L3 · Shear Stress

Flashcards8 cards

What is the core idea of model predictive control (MPC)?1 / 8

At every time step, MPC uses a model of the plant to predict its behaviour over a finite future horizon, solves an optimization problem for the control sequence that minimises a cost over that horizon subject to constraints, applies only the FIRST control action, then re-solves the whole problem again at the next step with a newly measured state — this repeated re-optimization is called the receding horizon principle.

Engineering

Engineering · L5 · Model Predictive Control

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Engineering · L5 · Model Predictive Control

Flashcards10 cards

What is fatigue, in an engineering context?1 / 10

Progressive, localized damage that builds up in a material from repeated cyclic loading and unloading — damage that can eventually cause failure at a stress level far below the material's static yield strength, even though no single load cycle comes close to overloading it.

Engineering

Engineering · L3 · Fatigue & Cyclic Loading

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Engineering · L3 · Fatigue & Cyclic Loading

Quiz4 questions

Why must pipe joints be sealed tight, with no gaps?

ASo the pipe looks nicerBSo water does not leak outCSo the pipe weighs lessDSo the water turns a different colour

Engineering

Engineering · L1 · Pipes & Water Flow Quiz

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Engineering · L1 · Pipes & Water Flow Quiz

Flowchart7 objects

Engineering

Engineering · L2 · Pulleys & Mechanical Advantage — Worked Numbers · flowchart

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Engineering · L2 · Pulleys & Mechanical Advantage — Worked Numbers · flowchart

Collection4 items

01Engineering · L4 · Control Systems — Fundamentals & PID

02Engineering · L4 · PID control: tuning, anti-windup, and practical design

03Engineering · L4 · Closed-loop feedback control system block diagram

+1 more

Engineering

Engineering · L4 · Control Systems Intro

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Engineering · L4 · Control Systems Intro

Flowchart10 objects

Engineering

Engineering · L3 · Torque & Wrenches · flowchart

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Engineering · L3 · Torque & Wrenches · flowchart

Flowchart15 objects

Engineering

Engineering · L1 · Pushing On A Square Frame vs A Triangle Frame

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Engineering · L1 · Pushing On A Square Frame vs A Triangle Frame

Note~267 words · 1 min

Different prototypes answer different questions A prototype is a first try, but there's more than one way to build one. The right choice depends entirely on what you're trying to learn, and how much you're willing to spend to learn it. What

Engineering

Engineering · L2 · Comparing Prototyping Methods

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Engineering · L2 · Comparing Prototyping Methods

Note~352 words · 2 min

Why bother testing Every manufactured part has a spec: a target strength, size or behaviour. Quality control is the set of checks that confirms parts actually meet it before a customer sees them. Destructive versus non-destructive A tensile

Engineering

Engineering · L3 · Quality Control & Testing

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Engineering · L3 · Quality Control & Testing

Flowchart9 objects

Engineering

Engineering · L1 · Materials That Change With Heat · flowchart

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Engineering · L1 · Materials That Change With Heat · flowchart

Flowchart9 objects

Engineering

Engineering · L3 · Buoyancy & Archimedes' Principle · flowchart

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Engineering · L3 · Buoyancy & Archimedes' Principle · flowchart

Flowchart9 objects

Engineering

Engineering · L1 · Pipes & Water Flow · flowchart

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Engineering · L1 · Pipes & Water Flow · flowchart

Flashcards9 cards

What is a heat exchanger?1 / 9

A device that transfers heat from one fluid stream to another without letting the two fluids physically mix — they stay separated by a thin metal wall or set of tubes that heat can conduct through.

Engineering

Engineering · L3 · Heat Exchangers

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Engineering · L3 · Heat Exchangers

Flowchart9 objects

Engineering

Engineering · L3 · Voltage Dividers · flowchart

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Engineering · L3 · Voltage Dividers · flowchart

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