Hardware FYI

Topic	Replies	Views	Activity
You're designing a product rated to last for 5 years. How would you validate the design in terms of testing for performance, durability, and reliability? Reliability & Mechanical Test mechanical-testing , zoox , apple , google	1	3079	February 21, 2022
Engineering Builds: EVT, DVT, PVT Consumer Hardware Guide	1	3064	October 12, 2023
You have a long slender vertical member with a compressive force on one end, what if the dominant failure mode? Mechanical Design	2	2496	February 15, 2022
Types of Thermal Cooling for Consumer Electronics Consumer Hardware Guide heat-transfer	2	2491	October 4, 2020
You are machining two plates with identical hole patterns that will bolted together. How do you ensure that they perfectly line up? Manufacturing & Consumer Product Design	2	2473	January 21, 2025
What are common grades of stainless steel used in manufacturing? Materials Science general , waymo	1	2974	July 27, 2020
What is a unity feedback loop and the core components of the system? Electrical Engineering	1	2965	September 7, 2020
Basics of Geometric Dimensioning and Tolerancing (GD&T) Consumer Hardware Guide	1	2957	December 8, 2023
Your product is within spec at one location, but out of spec in another. Why? Manufacturing & Consumer Product Design	2	2406	January 21, 2025
Is a laminar or turbulent boundary layer better for heat transfer from the surface to the environment? Heat Transfer waymo , heat-transfer	1	2915	August 5, 2020
You have two objects that mate together, you want to decrease the total linear tolerance stack up. What can you do to decrease the total tolerance stackup? Manufacturing & Consumer Product Design	2	2360	October 30, 2024
If you had to pressurize a pressure vessel in testing, would you rather pressurize with liquid or gas and why? Mechanical Design spacex , firefly	1	2881	January 21, 2024
When should you counterbore vs. countersink a hole? Manufacturing & Consumer Product Design	1	2860	July 31, 2021
Why does a computer/office chair have fives legs? Why does a chair have four? Mechanical Design	1	2703	September 15, 2023
Can you draw the block diagram for a non-inverting operational amplifier and derive the gain equation? Electrical Engineering apple	2	2157	April 4, 2022
What is the Nyquist Theorem and how do you define a sufficient sampling rate? Electrical Engineering roam-robotics	2	2141	April 18, 2022
Name all the ways of actuating an object you can think of. What are the pros and cons of each? Mechanical Design	2	2131	February 15, 2022
5% failure at reliability test, how to solve? Reliability & Mechanical Test apple	1	2587	June 13, 2023
On the material datasheet of most polymers, the glass transition temperature, Tg, is provided. What does the glass transition temperature refer to? Materials Science tesla	1	2574	January 5, 2024
Name all the ways to to lighten a cantilevered I beam with a point load on the end, while minimizing weight and deflection Cantilever Beams	2	2080	October 30, 2024
What is the difference between a capacitor and an inductor and how are they commonly used? Electrical Engineering analog	2	2063	May 23, 2024
Barrel Connector Concentricity Mechanical Design apple	2	1155	July 14, 2025
If there is a diving board, how would you half the deflection? Cantilever Beams	1	2467	July 31, 2021
CNC vs other techniques Manufacturing & Consumer Product Design manufacturing	3	980	July 31, 2024
What are the base and peak loads of a generation system, which methods of power generation and storage are suitable for each? Electrical Engineering	0	616	July 4, 2024
Manufacturing 101: Plastics Consumer Hardware Guide	1	2435	October 12, 2023
How would you design a snap fit? Where are snap fits used most often? How much force does it usually take to insert a snap fit? Mechanical Design	1	2384	February 16, 2022
Draw the schematics for a simple first-order low-pass filter Electrical Engineering	1	2349	May 18, 2024
Identifying Metals Consumer Hardware Guide	2	1903	February 26, 2025
For the following joints (images) describe the forces and failure modes of the bolted connections. Why is pretensioning the bolts important? What would fatigue failure look like for the bolted connections? Mechanical Design	1	2280	August 12, 2021
Imagine a dashed line down a mile length of a straight road. Explain how you would calculate the volume of paint required for this mile stretch of road General ME Questions general , synapse	1	2271	September 15, 2023
You have a bench (image), where would you sit to maximize the reaction force on one end? Cantilever Beams	2	1833	August 12, 2021
How do you interpolate the physical property of one unknown metal among metal sheets of known physical properties? Materials Science apple	1	2201	April 21, 2022
How would you design an experiment to measure the thermal conductivity of corrugated cardboard? Heat Transfer heat-transfer , gradient	1	2189	September 12, 2024
If you have a cantilevered beam with one end fixed to a wall and the other end free, and there is a moment acting on the free end, where will the beam fail? Cantilever Beams	1	2183	July 31, 2021
What are the differences between MOSFETs and Bi-Polar Junction Transistors? Electrical Engineering amazon	1	2120	March 7, 2022
What are diodes and which purpose do they serve in electrical design? Electrical Engineering	1	2122	March 7, 2022
How does power draw differ between thick and thin cabling? Electrical Engineering waymo	1	2111	September 11, 2020
Is a pressure vessel more likely to fail from repeated cycles of low pressure or a one off high pressure spike? Mechanical Design	1	2101	August 12, 2021
How would you design a satellite that orbits the earth and passively maintains a temperature of 300K +/- 10K? Heat Transfer heat-transfer , gradient	2	1706	September 12, 2024
When parts are designed, how do you ensure the manufacturer is building what you intended to design? Manufacturing & Consumer Product Design facebook	1	2070	January 5, 2024
Brainstorm 15-20 ways to remove balloons from a room General ME Questions apple	0	2918	October 26, 2022
There are three buckets with water, air, and gasoline. If you put a sensor in the buckets, what type of sensing technology would you use to tell them apart? Mechanical Design	1	2057	November 29, 2021
Can you describe the injection molding manufacturing process? Manufacturing & Consumer Product Design manufacturing	1	2027	January 5, 2024
In the context of injection molding, can you explain the difference between a slide and a lifter? Specifically, how do they operate, and in what situations would you use each mechanism? Manufacturing & Consumer Product Design apple , manufacturing , plastics	1	2033	June 17, 2024
What are the major design considerations for optimizing airflow? Mechanical Design	1	2021	September 18, 2023
Crafting an Effective Engineering Resume Consumer Hardware Guide	3	1424	November 14, 2023
When you use the front brakes on your bicycle, why does your body want to rotate over the front wheel? Free Body Diagrams	1	2014	January 13, 2021
Draw an I-V curve for a diode. How you interpret the graph in terms of the diode's behavior? Electrical Engineering diodes	1	1989	April 20, 2024
Plastic Manufacturing & Identification Consumer Hardware Guide	1	1986	November 18, 2023