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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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Engineering: explore STEM content (page 16 of 27) · openstem

Flowchart14 objects

Engineering

Engineering · L4 · Truss free-body diagram: method of joints for a simple truss

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Engineering · L4 · Truss free-body diagram: method of joints for a simple truss

Flashcards8 cards

What is a prototype?1 / 8

A prototype is a first try — a small, cheap model you build to test an idea before making the real, expensive version.

Engineering

Engineering · L1 · Prototypes & Model Building

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Engineering · L1 · Prototypes & Model Building

Note~441 words · 2 min

What actually reverses The instantaneous voltage V_peak is the highest the wave ever reaches; ω is angular frequency in radians per second. One cycle sweeps 2π radians, so multiplying cycles per second by 2π converts f into ω. The curve ris

Engineering

Engineering · L3 · AC Circuits Basics

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Engineering · L3 · AC Circuits Basics

Flowchart14 objects

Engineering

Engineering · L3 · Fatigue & Cyclic Loading · flowchart

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Engineering · L3 · Fatigue & Cyclic Loading · flowchart

Flashcards9 cards

What is a transistor, in the simplest sense?1 / 9

An electrically-controlled switch. A small control current or voltage at one terminal lets it switch a much larger current on or off at the other two terminals — with no moving parts.

Engineering

Engineering · L3 · Transistors as Switches

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Engineering · L3 · Transistors as Switches

Flowchart5 objects

Engineering

Engineering · L1 · Light Bulbs Quiz · flowchart

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Engineering · L1 · Light Bulbs Quiz · flowchart

Quiz10 questions

A 500 N uniform beam of length 4 m is simply supported at both ends. What is each support reaction?

A500 N eachB250 N eachC125 N eachD1000 N each

Engineering

Engineering · L4 · Statics & Mechanics of Materials — 10 Q

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Engineering · L4 · Statics & Mechanics of Materials — 10 Q

Flowchart5 objects

Engineering

Engineering · L2 · Simple Robots & Motors Quiz · flowchart

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Engineering · L2 · Simple Robots & Motors Quiz · flowchart

Quiz6 questions

What does Pascal's principle say about pressure applied to a liquid trapped in a sealed system?

AIt only pushes in the direction it was appliedBIt transmits equally in every direction through the liquidCIt gets weaker the farther it travels through the liquidDIt only affects the piston nearest the push

Engineering

Engineering · L2 · Hydraulics Quiz

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Engineering · L2 · Hydraulics Quiz

Flashcards5 cards

What is a lever?1 / 5

A lever is a bar that rests on a pivot. A seesaw is a lever — one side goes up when the other goes down.

Engineering

Engineering · L1 · Simple Machines

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Engineering · L1 · Simple Machines

Flowchart16 objects

Engineering

Engineering · L4 · From time-domain signal to filtered digital output

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Engineering · L4 · From time-domain signal to filtered digital output

Flashcards9 cards

How do you find the equivalent resistance of resistors connected in series?1 / 9

Req = R1 + R2 + R3 + ... — just add up every resistance in the chain.

Engineering

Engineering · L3 · Series Resistor Networks

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Engineering · L3 · Series Resistor Networks

Flowchart7 objects

Engineering

Engineering · L1 · Everyday Inventions Quiz · flowchart

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Engineering · L1 · Everyday Inventions Quiz · flowchart

Flowchart15 objects

Engineering

Engineering · L3 · Weighing Cost vs Performance

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Engineering · L3 · Weighing Cost vs Performance

Quiz6 questions

How is the bending moment at a point on a beam calculated?

AForce divided by distanceBForce multiplied by the perpendicular distance from that pointCForce multiplied by the beam's total lengthDForce squared

Engineering

Engineering · L3 · Beam Bending & Moment of Inertia

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Engineering · L3 · Beam Bending & Moment of Inertia

Quiz6 questions

Household power in the US is 120 V RMS. What is the peak voltage?

A84.9 VB120 VC169.7 VD240 V

Engineering

Engineering · L3 · AC Circuits

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Engineering · L3 · AC Circuits

Quiz6 questions

A truss is a framework built almost entirely out of which shape?

ASquaresBCirclesCTrianglesDPentagons

Engineering

Engineering · L2 · Trusses & Triangulation Quiz

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Engineering · L2 · Trusses & Triangulation Quiz

Flashcards8 cards

What happens to a liquid's temperature-lowering effect when it evaporates off a surface?1 / 8

The surface cools down. Turning from liquid to gas takes energy, and the evaporating liquid pulls that energy out of whatever it is touching as heat.

Engineering

Engineering · L2 · Evaporative Cooling Basics

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Engineering · L2 · Evaporative Cooling Basics

Collection4 items

01Engineering · L1 · Measuring & Units

02Engineering · L1 · Measuring & Units

03Engineering · L1 · Measure Twice, Cut Once

+1 more

Engineering

Engineering · L1 · Measuring & Units

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Engineering · L1 · Measuring & Units

Flowchart5 objects

Engineering

Engineering · L1 · Water Turning to Steam Quiz · flowchart

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Engineering · L1 · Water Turning to Steam Quiz · flowchart

Collection5 items

01Engineering · L3 · Cost Estimation & Budgeting

02Engineering · L3 · Cost Estimation & Budgeting

03Engineering · L3 · Cost Estimation & Budgeting

+2 more

Engineering

Engineering · L3 · Cost Estimation & Budgeting

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Engineering · L3 · Cost Estimation & Budgeting

Note~262 words · 1 min

Collapse the network to one number Replace a group of resistors with the single Req that would draw exactly the same current from the source. How you combine them depends on the wiring, and nothing else. Series: resistances add Chained end

Engineering

Engineering · L3 · Equivalent Resistance: Series & Parallel Networks

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Engineering · L3 · Equivalent Resistance: Series & Parallel Networks

Collection4 items

01Engineering · L1 · Building Simple Circuits

02Engineering · L1 · Build Your First Circuit

03Engineering · L1 · Building a Circuit, Step by Step

+1 more

Engineering

Engineering · L1 · Building Simple Circuits

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Engineering · L1 · Building Simple Circuits

Flashcards5 cards

What is compression?1 / 5

Compression is a pushing force. When you stand on a bridge, your weight pushes down and squeezes the material underneath.

Engineering

Engineering · L2 · Bridges and Forces

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Engineering · L2 · Bridges and Forces

Flowchart16 objects

Engineering

Engineering · L3 · Ethics and Professional Responsibility · flowchart

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Engineering · L3 · Ethics and Professional Responsibility · flowchart

Note~184 words · 1 min

Two kinds of material Electricity needs a path, just like water needs a pipe. Why wires have two layers Look closely at any electrical cord. Inside is thin metal wire, a conductor, carrying the electricity. Wrapped round it is rubber or pla

Engineering

Engineering · L1 · Conductors and Insulators

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Engineering · L1 · Conductors and Insulators

Flowchart5 objects

Engineering

Engineering · L2 · Hydraulics Quiz · flowchart

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Engineering · L2 · Hydraulics Quiz · flowchart

Collection5 items

01Engineering · L3 · Thermal Expansion

02Engineering · L3 · Thermal Expansion

03Engineering · L3 · Thermal Expansion & Material Behavior

+2 more

Engineering

Engineering · L3 · Thermal Expansion

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Engineering · L3 · Thermal Expansion

Collection4 items

01Engineering · L1 · Conductors & Insulators

02Engineering · L1 · Conductors and Insulators

03Engineering · L1 · Conductor or Insulator?

+1 more

Engineering

Engineering · L1 · Conductors & Insulators

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Engineering · L1 · Conductors & Insulators

Quiz6 questions

What makes a structure a cantilever?

AIt's supported at both endsBIt's fixed at only one end, with the other end freeCIt forms a closed triangular shapeDIt's curved and pushes its load outward into two feet

Engineering

Engineering · L2 · Cantilevers Quiz

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Engineering · L2 · Cantilevers Quiz

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