Latest Mechanical Engineering topics

Topic	Replies	Views	Activity
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 Neglect air resistance. Assume the extra mass is in the body of the vehicle Hint: What governing physics law is used to characterize this system?	9	21094	June 24, 2024
Walk me through the different materials used on the visible exterior of your phone, why those specific materials might be used, and how they are manufactured Mechanical Design apple , manufacturing , general , htc	2	4367	June 19, 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	2318	June 17, 2024
What are considerations for designing an injection molded part, like on the back-paneling of a consumer product? Manufacturing & Consumer Product Design square	1	1564	June 14, 2024
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	1	2230	April 2, 2024
You have a concentrated load at the center of a beam with two point supports on either end. Describe the shear force and bending moment diagram Cantilever Beams general , zoox	2	3317	March 3, 2024
On which side of a wall-mounted cantilever beam induced with a point load will it fail? Cantilever Beams cisco , spacex	5	21697	February 27, 2024
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	9745	April 24, 2022
You have two identical bolts and nuts torqued to the same spec clamping two faces together. One bolt is lubricated while the other is not. What is the clamp load of each bolt? Mechanical Design general , tesla	2	3651	February 14, 2024
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	3461	February 4, 2024
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	9442	February 2, 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	3041	January 21, 2024
What are the different ways you can identify if a part is steel or aluminum? Materials Science apple , materials	1	7582	August 5, 2020
What are common DFM guidelines for Sheet Metal Design, and how would you stiffen a part made from sheet metal? Manufacturing & Consumer Product Design square	1	4496	January 5, 2024
Can you describe the injection molding manufacturing process? Manufacturing & Consumer Product Design manufacturing	1	2145	January 5, 2024
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	2824	January 5, 2024
When parts are designed, how do you ensure the manufacturer is building what you intended to design? Manufacturing & Consumer Product Design facebook	1	2197	January 5, 2024
Motor Sizing - Torque & Power Calculations + Safety Considerations Free Body Diagrams zipline	0	1357	December 11, 2023
Truss Loading: Force Calculation & Displacement Mechanical Design zipline	0	1426	December 11, 2023
What are the three laws of thermodynamics? Heat Transfer general	1	26413	August 2, 2020
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	4275	February 15, 2022
What are the major design considerations for optimizing airflow? Mechanical Design	1	2137	September 18, 2023
If there is a diving board, how would you half the deflection? Cantilever Beams	1	2613	July 31, 2021
When should you counterbore vs. countersink a hole? Manufacturing & Consumer Product Design	1	3049	July 31, 2021
What are the different types of stress & force a material can endure? Mechanical Design	1	7171	August 3, 2021
Is a pressure vessel more likely to fail from repeated cycles of low pressure or a one off high pressure spike? Mechanical Design	1	2224	August 12, 2021
Why does a computer/office chair have fives legs? Why does a chair have four? Mechanical Design	1	3014	September 15, 2023
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	2399	September 15, 2023
How would you measure air pressure of an airplane? General ME Questions synapse	0	1684	October 3, 2020
Brainstorm 15-20 ways to remove balloons from a room General ME Questions apple	0	3073	October 26, 2022