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Mechanical Engineer Interview Questions

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18,521 mechanical engineer interview questions shared by candidates

Between the following materials, steel, magnesium, titanium, copper, aluminum, which is the most stiff and why? What does the stress strain plot look like for steel versus aluminum? What should you do if you want to increase the force until fracture? What would the stress strain plot look like if you took a material went until ultimate strength and then went back to zero stress and then went back to ultimate strength?
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Mechanical Engineer - Core Input Device Team and Battery Team

Interviewed at Apple

4.1★
Mar 14, 2016

Between the following materials, steel, magnesium, titanium, copper, aluminum, which is the most stiff and why? What does the stress strain plot look like for steel versus aluminum? What should you do if you want to increase the force until fracture? What would the stress strain plot look like if you took a material went until ultimate strength and then went back to zero stress and then went back to ultimate strength?

- You have a bowling ball in a boat then you drop it off the side and it sinks to the bottom. Will the water in the pool rise or fall? - You have two bowling balls that are identical on the outside and weigh the same on the top of an inclined ramp. One is hollow and one is solid. You let both of them roll down the ramp. Which one will reach the bottom first? - How would you reduce the deflection of a simply supported beam? - A pinned beam supported by a line that has an apple logo hanging from it. How would you reduce the stress in the line? - Lots of questions about how I used data analysis to make design decisions in my projects in my portfolio. - You have a 5 gallon jug and a 3 gallon jug and a hose that supplies endless water. You want to put 4 gallons in the 5 gallon jug. How can you put 4 gallons in the 5 gallon jug? (not an apple interview question but figured it might be helpful)
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Mechanical Design Engineer

Interviewed at Apple

4.1★
Sep 28, 2021

- You have a bowling ball in a boat then you drop it off the side and it sinks to the bottom. Will the water in the pool rise or fall? - You have two bowling balls that are identical on the outside and weigh the same on the top of an inclined ramp. One is hollow and one is solid. You let both of them roll down the ramp. Which one will reach the bottom first? - How would you reduce the deflection of a simply supported beam? - A pinned beam supported by a line that has an apple logo hanging from it. How would you reduce the stress in the line? - Lots of questions about how I used data analysis to make design decisions in my projects in my portfolio. - You have a 5 gallon jug and a 3 gallon jug and a hose that supplies endless water. You want to put 4 gallons in the 5 gallon jug. How can you put 4 gallons in the 5 gallon jug? (not an apple interview question but figured it might be helpful)

4 questions - time you received criticism and how you handled it - describe research projects you have had - describe a time you had to persuade someone in writing or verbally - If given 4 projects at once with the same due date, how would you go about handling them
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Patent Examiner (Mechanical Engineer)

Interviewed at US Patent and Trademark Office

3.2★
Aug 19, 2016

4 questions - time you received criticism and how you handled it - describe research projects you have had - describe a time you had to persuade someone in writing or verbally - If given 4 projects at once with the same due date, how would you go about handling them

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