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A garden hose has stopped flow. There is constant static pressure and no water hammer. Why does the hose tear in the axial direction at the end of the hose?
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2
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3644
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April 24, 2022
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Why does condensation form on the outside of cold glass on a hot day?
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1
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12657
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August 5, 2020
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Is it faster to cook pasta if you add it in before or after a pot of water starts boiling?
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2
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5845
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April 22, 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
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2483
|
April 21, 2022
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What is the Nyquist Theorem and how do you define a sufficient sampling rate?
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2
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2662
|
April 18, 2022
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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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6
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4674
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April 10, 2022
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What are the differences between MOSFETs and Bi-Polar Junction Transistors?
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1
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2432
|
March 7, 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
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4200
|
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
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2512
|
April 4, 2022
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What's the difference between a true stress-strain curve and a traditional stress-strain curve?
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1
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5942
|
August 5, 2020
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What are the advantages & disadvantages of different types of motors?
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2
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8596
|
March 14, 2022
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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
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5148
|
March 27, 2022
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Advice for Design Challenges and Teardowns?
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2
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1455
|
March 25, 2022
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Why is a manhole cover round?
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1
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3922
|
March 22, 2022
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Why does plastic become brittle in cold temperature?
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2
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8893
|
March 10, 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
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5918
|
March 10, 2022
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What are the three different modes of heat transfer?
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1
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10374
|
July 29, 2020
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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
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11295
|
August 6, 2020
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At what region of a stress-strain curve does strain hardening occur? What does strain hardening do?
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1
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11172
|
July 28, 2020
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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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2899
|
March 8, 2022
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If you have an enclosed room and I open the refrigerator, how will room temperature change?
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1
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3684
|
August 4, 2020
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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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10937
|
February 15, 2022
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Can you describe a voltage divider and how it works?
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1
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1827
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March 7, 2022
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What are diodes and which purpose do they serve in electrical design?
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1
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2420
|
March 7, 2022
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How do you change the cross-section of a beam to minimize deflection?
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1
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4822
|
March 6, 2022
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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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3857
|
March 3, 2022
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You're designing a product rated to last for 5 years. How would you validate the design in terms of testing for performance, durability, and reliability?
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1
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3413
|
February 21, 2022
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Describe the stress-strain curve between brittle and flexible materials?
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1
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15524
|
August 3, 2021
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What are the key parameters to consider when selecting a fan for forced airflow?
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2
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3010
|
February 17, 2022
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What is the difference between analog vs. digital signals? Is there a preference of when to choose each signal type?
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1
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2084
|
February 16, 2022
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