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About the Mechanical Engineering category
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1
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371
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July 27, 2020
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Your friend is coming over soon and you made them coffee. You want this coffee to be as hot as possible by the time they get to you. You can use creamer to affect the coffee, what should you do to make the coffee as hot as possible when they arrive?
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4
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567
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December 2, 2021
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A refrigerator is in a room and you open the door. Will the room get colder or hotter?
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2
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255
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November 29, 2021
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When selecting a material what would you take into consideration more, tensile strength or yield strength?
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4
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693
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November 29, 2021
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Three buckets Gasoline, Air, and Water
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2
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118
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November 29, 2021
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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?
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2
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377
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November 29, 2021
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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?
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4
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1663
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September 23, 2021
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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?
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4
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1126
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September 9, 2021
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You have a long slender vertical member with a compressive force on one end, what if the dominant failure mode?
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2
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335
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August 12, 2021
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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?
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2
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282
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August 12, 2021
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Name all the ways to to lighten a cantilevered I beam with a point load on the end, while minimizing weight and deflection
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2
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248
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August 12, 2021
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What DFMA considerations would you have when switching the material of a machined component from aluminum to steel?
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2
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230
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August 12, 2021
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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?
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2
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223
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August 12, 2021
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Name all the ways of actuating an object you can think of. What are the pros and cons of each?
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2
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205
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August 12, 2021
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Can you apply MMC to a profile of surface call out in GD&T?
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2
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236
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August 12, 2021
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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?
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2
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260
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August 12, 2021
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You have a bench (image), where would you sit to maximize the reaction force on one end?
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3
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212
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August 12, 2021
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Is a pressure vessel more likely to fail from repeated cycles of low pressure or a one off high pressure spike?
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2
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209
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August 12, 2021
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Your product is within spec at one location, but out of spec in another. Why?
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1
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173
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August 10, 2021
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How would you design an automated sticker peeler?
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1
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110
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August 10, 2021
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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?
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1
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113
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August 10, 2021
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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?
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1
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98
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August 10, 2021
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Why does a computer/office chair have fives legs? Why does a chair have four?
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1
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157
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August 10, 2021
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How would you measure repeatability of an arm that needs to swing exactly 180 degrees (with a sensor mounted on the end?)
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1
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109
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August 10, 2021
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Describe how you approach material selection/design for a component where strength is critical, and how you would approach a different component where stiffness is critical?
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1
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96
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August 10, 2021
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Describe the failure theories for brittle and ductile materials
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1
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117
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August 10, 2021
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What are the factors that influence the spring constant?
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2
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186
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August 3, 2021
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What are the different types of stresses a part can endure?
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2
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280
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August 3, 2021
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The buckle on your backpack is breaking. How would you redesign the part to ensure this doesn't happen?
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2
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736
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August 10, 2020
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Describe the stress-strain curve between brittle and flexible materials?
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2
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161
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August 3, 2021
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