Hardware FYI

Topic	Replies	Views	Activity
GD&T: Home Button Placement Problem (Apple) Manufacturing & Consumer Product Design apple	1	4449	March 2, 2022
Mechanical Engineering Technical Interview Questions Mechanical Engineering featured	1	17848	February 3, 2024
Rank the strength of the following materials from strongest to weakest: carbon fiber, plastic, steel, aluminum Materials Science apple , materials	4	8683	June 25, 2023
You have 5kg of Aluminum and 5kg of Steel. You can make whatever cross section beam you want with these materials. If you have to make a cantilever beam 1m long with a load at the end and you want to minimize the deflection. What material would you use? Cantilever Beams general , apple	8	5288	February 2, 2024
What are six ways to reduce cantilever beam deflection? Cantilever Beams general , apple , tesla	3	22892	February 5, 2023
If two vehicles are identical, except for one weighing twice as much as the other vehicle, and they roll down a hill, which car reaches the bottom first? Free Body Diagrams physics , tesla	8	10727	December 11, 2023
On which side of a wall-mounted cantilever beam induced with a point load will it fail? Cantilever Beams cisco , spacex	5	12088	February 27, 2024
Label and describe the key points on a stress-strain curve Materials Science general	1	6527	July 27, 2020
Describe/draw the stress-strain curve of aluminum vs. steel on the same graph Materials Science apple , materials	4	22584	February 5, 2023
A steel tube and a brass rod are concentrically located. their ends are fixed on both sides using rigid plates. One of these plates is fixed to the wall, the other is free. Heat is applied to the system, explain the stresses that develop in the system Cantilever Beams apple , materials	2	3479	March 10, 2022
If I have a solid rod and hollow rod with the same mass and I let them roll down a ramp, which one reaches the bottom first and why? Free Body Diagrams general , apple	6	12659	February 5, 2023
You have a stool with four legs identical in size. Two legs are made from aluminum, while the other legs are made from steel. If a load is placed on the stool's seat, will the legs take equal load or not? Mechanical Design spacex	7	6014	April 17, 2021
Given a wall-mounted cantilever beam and a point load at the free end, describe the shear force diagram and bending moment diagram Cantilever Beams htc , zoox , apple	2	9384	June 20, 2023
What are the three laws of thermodynamics? Heat Transfer general	1	17274	August 2, 2020
Describe/draw the stress-strain curve between aluminum, steel, hardened steel, & plastics on the same graph Materials Science apple , general , materials	2	4394	February 24, 2023
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	2230	June 21, 2022
How do you calculate the correct sample size for reliability testing? Manufacturing & Consumer Product Design amazon , apple , waymo , google	3	9662	April 15, 2021
You have two pucks that are slid across a frictionless horizontal surface at the same initial speed, one puck passes over a large dip in the surface. Which one reaches the end of the track first? Free Body Diagrams	6	2185	April 10, 2022
If you have an 'I' cross section cantilever beam and you want to make it stiffer, do you increase the height or width? Cantilever Beams cover	3	8724	June 14, 2023
What are critical dimensions necessary in the tolerance stack-up/loop to minimize the part gap? Mechanical Design square	0	532	August 2, 2023
Why does condensation form on the outside of cold glass on a hot day? General ME Questions zoox , thermodynamics	1	4660	August 5, 2020
You have a stool with four legs, two are Aluminum, two are steel. All legs are identical in geometry (area/length). If you continiously heat up this stool, how will the load share change over as time goes on? Cantilever Beams spacex	0	1836	September 28, 2020
When is a screw better than a nail and the reverse question? Manufacturing & Consumer Product Design general , spacex , cover	1	2136	November 13, 2020
You put a glass of water on a record turntable and begin slowly increasing the speed. What happens first? Does the glass slide off or tip over, or does the water splash out? Free Body Diagrams apple , general , physics	1	6329	August 6, 2020
What are the three different modes of heat transfer? Heat Transfer waymo , heat-transfer	1	6302	July 29, 2020
Describe the stress-strain curve between brittle and flexible materials? Materials Science apple , tesla	1	6233	August 3, 2021
At what region of a stress-strain curve does strain hardening occur? What does strain hardening do? Materials Science general , cisco	1	6167	July 28, 2020
A refrigerator is in a room and you open the door. Will the room get colder or hotter? Heat Transfer	2	4963	February 15, 2022
A car on a hill of constant slope accelerates from rest under gravity to a point on the hill. If you want to maximize the velocity of the car at this point, where along the length of the car (e.g. downhill or uphill) would you fix an additional mass? Free Body Diagrams apple	2	4902	July 24, 2023
A flagpole is mounted to the ground and an eagle is sitting on top with wind causing the pole to sway back and forth. Describe ways to reduce the amount of motion in the flagpole Cantilever Beams general , aurishealth	1	5785	July 29, 2020
What graph would you look at to see whether a material would fail from long-term exposure to vibrations? Mechanical Design tesla , mechanical-design	1	3181	September 11, 2020
What are the factors that influence the spring constant? Free Body Diagrams	1	5512	August 3, 2021
Apple Interviewing Process (Mechanical + Product Design Engineers) Consumer Hardware Guide	1	3088	December 8, 2023
You are in a rowing boat on a lake. A large heavy rock is also in the boat. You heave the rock overboard. It sinks to the bottom of the lake. What happens to the water level in the lake? Does it rise, fall or stay the same? General ME Questions general	1	5274	July 27, 2020
What are the advantages & disadvantages of different types of motors? General ME Questions mechatronics	2	3969	March 14, 2022
Why does plastic become brittle in cold temperature? Materials Science tesla	2	3932	March 10, 2022
What is the difference between stiffness and strength? Materials Science general , apple , airbnb	1	4809	August 5, 2020
You are designing a steel beam to minimize deflection for a given force and avoid permanent deformation. Which material property should be maximized? Cantilever Beams tesla	1	802	February 2, 2024
Given a point-load at the end of a wall-mounted cantilever beam, what is the shear stress at the wall? Cantilever Beams amazon	4	2845	April 5, 2021
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	2528	August 4, 2020
Basics of Sheet Metal Design Consumer Hardware Guide general , metals	2	3499	September 6, 2020
You have a cantilever beam, to minimize deflection, you add a support elbow. Would you add this to the top or bottom? Why? Cantilever Beams general	1	4065	April 24, 2022
Additional Useful Resources Online Consumer Hardware Guide	0	975	May 6, 2021
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	4	1371	February 4, 2024
What are the different ways you can identify if a part is steel or aluminum? Materials Science apple , materials	1	3764	August 5, 2020
How do you change the cross-section of a beam to minimize deflection? Cantilever Beams apple , tesla , facebook , spacex	1	2108	March 6, 2022
What are the advantages & disadvantages between a buck converter and a LDO? Electrical Engineering apple , power-electronics	2	2962	May 24, 2022
Two cars are at the top of a hill. One car is just a simple wheel axle car (not power), one car has a spring suspension system. Which one will reach first? Free Body Diagrams spacex	3	2549	June 3, 2023
When selecting a material what would you take into consideration more, tensile strength or yield strength? Materials Science	3	2349	November 29, 2021
Is it faster to cook pasta if you add it in before or after a pot of water starts boiling? Heat Transfer heat-transfer , synapse	2	2704	April 22, 2022