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Engineering: explore STEM content (page 10 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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Quiz6 questions

What is the main goal of Design for Manufacturing (DFM)?

AMaking a part as visually detailed as possible on the CAD modelBDesigning a part so it is easy, fast, and cheap to actually manufactureCMaking every part completely custom so it fits perfectlyDMaximizing the number of parts to increase precision

Engineering

Engineering · L3 · Design for Manufacturing

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Engineering · L3 · Design for Manufacturing

Quiz6 questions

Which prototyping method usually takes the least time and money to build?

AA paper or cardboard mockupBA 3D-printed prototypeCA CNC-machined prototypeDAll three cost and take about the same

Engineering

Engineering · L2 · Comparing Prototyping Methods Quiz

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Engineering · L2 · Comparing Prototyping Methods Quiz

Flowchart5 objects

Engineering

Engineering · L3 · Design Process Case Study · flowchart

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Engineering · L3 · Design Process Case Study · flowchart

Flowchart12 objects

Engineering

Engineering · L3 · Op-Amps & Basic Amplification · flowchart

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Engineering · L3 · Op-Amps & Basic Amplification · flowchart

Note~318 words · 2 min

Torque is turning effect Whenever you turn a bolt, pedal a bike or push a door open, you're applying torque. It depends on two things together: how hard you push, and how far from the pivot you push. Why a longer handle helps τ = F × d mean

Engineering

Engineering · L3 · Torque & Wrenches

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Engineering · L3 · Torque & Wrenches

Note~328 words · 2 min

The problem standards solve Imagine every factory chose its own bolt sizes. A bolt from one company would almost never fit a nut from another, every repair would need a custom part, and nothing could be swapped. A standard fixes that by get

Engineering

Engineering · L2 · Standards & Codes

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Engineering · L2 · Standards & Codes

Collection5 items

01Engineering · L3 · Column Buckling

02Engineering · L3 · Column Buckling

03Engineering · L3 · Column Buckling

+2 more

Engineering

Engineering · L3 · Column Buckling

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Engineering · L3 · Column Buckling

Collection5 items

01Engineering · L3 · Design for Manufacturing

02Engineering · L3 · Design for Manufacturing

03Engineering · L3 · Design for Manufacturing

+2 more

Engineering

Engineering · L3 · Design for Manufacturing

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Engineering · L3 · Design for Manufacturing

Note~200 words · 1 min

A long trip through pipes Water starts at a tower or treatment plant, travels through a huge network of pipes buried under the streets, and finally arrives at your tap. Engineers design that whole network: where the pipes go, how big they a

Engineering

Engineering · L1 · Pipes & Water Flow

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Engineering · L1 · Pipes & Water Flow

Flowchart11 objects

Engineering

Engineering · L3 · Failure Mode and Effects Analysis · flowchart

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Engineering · L3 · Failure Mode and Effects Analysis · flowchart

Flashcards8 cards

What is the natural frequency ωₙ of an undamped spring-mass system, and how is it derived?1 / 8

ωₙ = √(k/m) rad/s. Free vibration of an undamped mass on a spring obeys mẍ + kx = 0. Substituting x = e^(st) gives the characteristic equation ms² + k = 0, with roots s = ±j√(k/m) — purely imaginary, so the mass oscillates sinusoidally forever at ωₙ with no energy loss.

Engineering

Engineering · L4 · Mechanical Vibrations

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Engineering · L4 · Mechanical Vibrations

Quiz6 questions

An AND gate has inputs A = 1 and B = 1. What is the output?

A0B1CIt depends on which input arrived firstDUndefined

Engineering

Engineering · L3 · Digital Logic Gates

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Engineering · L3 · Digital Logic Gates

Flowchart7 objects

Engineering

Engineering · L1 · How Remote Controls Send Signals · flowchart

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Engineering · L1 · How Remote Controls Send Signals · flowchart

Quiz6 questions

The Kalman filter's predict step updates the covariance as:

APₖ⁻ = APₖ₋₁Aᵀ + Q, growing uncertainty by the process noiseBPₖ⁻ = (I − KH)Pₖ₋₁, always shrinking uncertaintyCPₖ⁻ = HPₖ₋₁Hᵀ + RDPₖ⁻ is unaffected by the predict step

Engineering

Engineering · L5 · Kalman Filtering & State Estimation — 6 Q

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Engineering · L5 · Kalman Filtering & State Estimation — 6 Q

Flowchart16 objects

Engineering

Engineering · L3 · Sizing a Bolted Joint for Shear

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Engineering · L3 · Sizing a Bolted Joint for Shear

Note~204 words · 1 min

Clothes are little machines Every piece of clothing has a job. A raincoat keeps water out. A winter coat keeps warm air in. Sunglasses keep bright light off your eyes. Engineers pick a material to match each job. Layers trap warm air Waterp

Engineering

Engineering · L1 · Dressing for Weather

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Engineering · L1 · Dressing for Weather

Note~205 words · 1 min

Why we build bridges A bridge lets people, cars and trains cross a gap (a river, a valley, a road) instead of going all the way round it. Engineers pick a shape that suits the gap. How each one holds the weight Spot the bridge

Engineering

Engineering · L1 · Bridges for Kids: Beam, Arch, and Suspension

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Engineering · L1 · Bridges for Kids: Beam, Arch, and Suspension

Flashcards9 cards

What is materials cost, in a project budget?1 / 9

The total amount spent on physical materials — found by multiplying the quantity of each material needed by its unit price, then summing over every material in the project.

Engineering

Engineering · L3 · Cost Estimation & Budgeting

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Engineering · L3 · Cost Estimation & Budgeting

Flashcards11 cards

What is a capacitor?1 / 11

A capacitor is a component that stores electrical charge. It can hold that charge for a while, and then release it — often very, very quickly.

Engineering

Engineering · L2 · What Does a Capacitor Do?

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Engineering · L2 · What Does a Capacitor Do?

Note~360 words · 2 min

One end fixed, one end free A cantilever is supported at one end only and sticks out unsupported at the other. That single feature is the entire definition. What a load does to it Put weight on the free end and it bends down. Nothing undern

Engineering

Engineering · L2 · Cantilevers

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Engineering · L2 · Cantilevers

Flowchart5 objects

Engineering

Engineering · L2 · Arches & Domes Quiz · flowchart

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Engineering · L2 · Arches & Domes Quiz · flowchart

Flashcards9 cards

What is viscosity?1 / 9

A fluid's internal resistance to flow — how much it resists being deformed or sheared as it moves. A high-viscosity fluid like honey resists flowing much more than a low-viscosity fluid like water, which pours and splashes freely.

Engineering

Engineering · L3 · Viscosity & Flow Regimes

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Engineering · L3 · Viscosity & Flow Regimes

Flowchart11 objects

Engineering

Engineering · L2 · Reducing vs Increasing Friction

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Engineering · L2 · Reducing vs Increasing Friction

Flashcards7 cards

What is a "batch" in manufacturing?1 / 7

A group of units made together under the same conditions — for example, one production run of 10,000 bolts made from the same steel on the same day.

Engineering

Engineering · L3 · Quality Control & Testing

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Engineering · L3 · Quality Control & Testing

Note~365 words · 2 min

Why heat makes things bigger Atoms in a solid sit in a lattice, held by bonds that behave like tiny springs. Every atom is already vibrating. Add heat, they vibrate harder, and on average they sit slightly further apart. The whole object gr

Engineering

Engineering · L3 · Thermal Expansion & Material Behavior

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Engineering · L3 · Thermal Expansion & Material Behavior

Note~236 words · 1 min

A lever is a bar that tips Just a stiff bar or board that pivots around a fixed point. Push one end down and the other swings up. That fixed point is the fulcrum, and where it sits controls everything about how the lever behaves. Balancing

Engineering