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How do you test for waterproof on consumer electronic products (smart phone, tablet, etc)?
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1
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75
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January 20, 2023
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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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5
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5945
|
January 17, 2023
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5% failure at reliability test, how to solve?
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0
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51
|
January 17, 2023
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Touch screen assembly to smart phone
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0
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41
|
January 17, 2023
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What are six ways to reduce cantilever beam deflection?
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2
|
11092
|
October 1, 2020
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Brainstorm 15-20 ways to remove balloons from a room
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0
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265
|
October 26, 2022
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GD&T: Home Button Placement Problem (Apple)
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1
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1617
|
March 2, 2022
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What are the three common communication protocols? How do they (I2C, SPI, UART) work?
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1
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168
|
July 31, 2022
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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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2
|
1177
|
May 28, 2022
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What are the advantages & disadvantages between a buck converter and a LDO?
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2
|
563
|
May 24, 2022
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What are the common wireless communication protocols in IOT? How do they work?
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0
|
136
|
May 24, 2022
|
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Can you describe the two-shot injection molding process?
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2
|
1230
|
May 3, 2022
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What's the difference between thermoset plastics and thermoplastics?
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1
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924
|
April 25, 2022
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How do you interpolate the physical property of one unknown metal among metal sheets of known physical properties?
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1
|
504
|
April 21, 2022
|
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iPhone Home Button: How would you design the mechanism of the home button?
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0
|
626
|
April 17, 2022
|
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Describe/draw the stress-strain curve between aluminum, steel, hardened, steel, & plastics on the same graph
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0
|
667
|
April 17, 2022
|
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Can you draw the block diagram for an inverting operational amplifier and derive the gain equation?
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2
|
344
|
April 4, 2022
|
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Can you draw the block diagram for a non-inverting operational amplifier and derive the gain equation?
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2
|
189
|
April 4, 2022
|
|
A disk with the hole in the middle is heated. Does the hole get bigger, smaller, or stay the same size?
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2
|
1507
|
March 27, 2022
|
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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
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2
|
2266
|
March 10, 2022
|
|
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?
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|
1
|
3469
|
August 6, 2020
|
|
How do you change the cross-section of a beam to minimize deflection?
|
|
1
|
1005
|
March 6, 2022
|
|
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
|
3071
|
February 23, 2022
|
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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?
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|
1
|
2337
|
February 22, 2022
|
|
Reliability testing, lifecycle testing, accelerated lifecycle testing. How do you do it?
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|
1
|
778
|
February 21, 2022
|
|
Describe the stress-strain curve between brittle and flexible materials?
|
|
1
|
2281
|
August 3, 2021
|
|
What is the difference between analog vs. digital signals? Is there a preference of when to choose each signal type?
|
|
1
|
425
|
February 16, 2022
|
|
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?
|
|
2
|
1151
|
February 15, 2022
|
|
Given an adjustable crescent wrench, which cross-sections would you use for different parts of the wrench?
|
|
2
|
1248
|
July 31, 2021
|
|
How do you calculate the correct sample size for reliability testing?
|
|
3
|
2255
|
April 15, 2021
|
