Hardware FYI

Topic	Replies	Views	Activity
Can you describe the two-shot injection molding process? Manufacturing & Consumer Product Design apple	2	1959	May 3, 2022
How far out do you expect a tape measurer to extend before it begins to fall? What type of failure mode does this encompass? Cantilever Beams spacex	2	1954	June 21, 2022
What's the optimal size rock to throw if you want to throw it as far as possible? Free Body Diagrams apple	1	2379	February 10, 2021
If you had designed this rear cover, what are 5 tests that you would conduct on the completed iPod Touch assembly to ensure that your rear cover design met all applicable requirements? Why? Reliability & Mechanical Test apple	2	1872	February 15, 2022
A beam is made from two cylinders, where the inner cylinder is steel and the outer cylinder is aluminum. Which cylinder will yield first if beam is a simply supported cantilever beam? Cantilever Beams general	0	569	December 20, 2022
Given an adjustable crescent wrench, which cross-sections would you use for different parts of the wrench? Mechanical Design mechanical-design , apple	2	1763	July 31, 2021
Definitive Plastic Manufacturing Guide Consumer Hardware Guide	1	1213	September 3, 2020
You want to minimize beam deflection. If you had to choose between changing the width or the height of the cross-section of a beam, which would one you choose and why? general , apple , beam-theory	1	2121	August 4, 2020
What DFMA considerations would you have when switching the material of a machined component from aluminum to steel? Manufacturing & Consumer Product Design	2	1629	March 8, 2022
How do you test for waterproofing on consumer electronic products (smart phone, tablet, etc)? Mechanical Design apple	3	1366	August 28, 2023
What are the key components in a consumer electronic laptop? Mechanical Design general , apple	2	1547	October 3, 2020
What are the equations of motion for a mass-spring damper system? Free Body Diagrams zoox , amazon	1	1884	October 4, 2020
How do you change the cross-section of a beam to minimize deflection? Cantilever Beams apple , tesla , facebook , spacex	1	1788	March 6, 2022
Basics of Compression Molding Consumer Hardware Guide plastics	1	1772	September 6, 2020
The buckle on your backpack is breaking. How would you redesign the part to ensure this doesn't happen? Mechanical Design synapse	1	1767	August 10, 2020
What's the difference between thermoset plastics and thermoplastics? Materials Science tesla , apple , materials	1	1720	April 25, 2022
You have a long slender vertical member with a compressive force on one end, what if the dominant failure mode? Mechanical Design	2	1358	February 15, 2022
What's the difference between a true stress-strain curve and a traditional stress-strain curve? Materials Science waymo , materials	1	1635	August 5, 2020
Basics of Injection Molding Consumer Hardware Guide plastics	1	1633	September 3, 2020
For a simply supported beam, which beam would have less deflection: a single stacked or double stacked beam? Cantilever Beams	3	1151	January 30, 2023
A garden hose has stopped flow. There is constant static pressure and no water hammer. Why does the hose tear in the axial direction at the end of the hose? Mechanical Design spinlaunch , spacex	2	1316	April 24, 2022
Why is a manhole cover round? General ME Questions microsoft	1	1559	March 22, 2022
What are the different types of stress & force a material can endure? Mechanical Design	1	1553	August 3, 2021
Describe a CPU heat sink geometry and why it has that geometry. What would you do to improve or decrease the heat transfer of a heat sink? Heat Transfer	1	1527	March 3, 2022
Types of Thermal Cooling for Consumer Electronics Consumer Hardware Guide heat-transfer	2	1243	October 4, 2020
Top Electrical Engineering Interview Questions Electrical Engineering	3	604	July 12, 2023
If I have sealed tubing subjected to its maximum pressure rating, where would it fail and why? Mechanical Design spacex	1	1481	October 3, 2020
What are the key parameters to consider when selecting a fan for forced airflow? Mechanical Design heat-transfer	2	1177	February 17, 2022
When should you counterbore vs. countersink a hole? Manufacturing & Consumer Product Design	1	1435	July 31, 2021
If you have an enclosed room and I open the refrigerator, how will room temperature change? Heat Transfer thermodynamics , htc	1	1427	August 4, 2020
Name all the ways of actuating an object you can think of. What are the pros and cons of each? Mechanical Design	2	1124	February 15, 2022
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	1368	February 21, 2022
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	1349	July 31, 2021
What are common grades of stainless steel used in manufacturing? Materials Science general , waymo	1	1337	July 27, 2020
If there is a diving board, how would you half the deflection? Cantilever Beams	1	1329	July 31, 2021
Is a laminar or turbulent boundary layer better for heat transfer from the surface to the environment? Heat Transfer waymo , heat-transfer	1	1324	August 5, 2020
Two concentric tubes, where the inner tube is made of aluminum and outer tube is steel, are assembled vertically with a mass on top. Which tube will see more deflection? Cantilever Beams	3	935	October 26, 2023
What are some important characteristics for material selection? Materials Science materials , apple	1	1310	August 5, 2020
Two cylindrical tanks are full of water, where one is oriented horizontally and another vertically. If a hole is drilled in the bottom of the tank, which one empties first? General ME Questions general	1	728	September 24, 2023
Basics of Blow Molding Consumer Hardware Guide plastics	1	1289	September 6, 2020
You have a bench (image), where would you sit to maximize the reaction force on one end? Cantilever Beams	2	1026	August 12, 2021
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	1233	February 16, 2022
Basics of Plastic Extrusion Consumer Hardware Guide plastics	1	1197	September 3, 2020
Testing Hardware Products Guide Consumer Hardware Guide	2	977	August 13, 2020
When you use the front brakes on your bicycle, why does your body want to rotate over the front wheel? Free Body Diagrams	1	1157	January 13, 2021
Your product is within spec at one location, but out of spec in another. Why? Manufacturing & Consumer Product Design	1	1147	January 13, 2022
Basics of Thermoforming Consumer Hardware Guide plastics	1	1146	September 6, 2020
What is a unity feedback loop and the core components of the system? Electrical Engineering	1	1139	September 7, 2020
Can you apply MMC to a profile of surface call out in GD&T? Manufacturing & Consumer Product Design	1	1129	August 12, 2021
Can you draw the block diagram for an inverting operational amplifier and derive the gain equation? Electrical Engineering apple	2	916	April 4, 2022