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84 Example Questions

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up vote 15 down vote
Is it possible to 'pump' a powder in a similar manner to liquids? If so, what are the challenges? If not, what are the alternatives?
added by NauticalMile Oct 10 '13 at 20:25
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up vote 12 down vote
How to transfer compressed air to a rotating wheel on a vehicle from a fixed air source from the vehicle?
added by Akash Oct 8 '13 at 15:35
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up vote 12 down vote
How do I size a heat exchanger for a shear thinning liquid?
added by martin Oct 22 '13 at 14:15
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up vote 11 down vote
What are the pros and cons of a "roundabout" intersection vs. a traffic light intersection?
added by Stephen Collings Sep 26 '13 at 14:19
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up vote 11 down vote
How do I consider uncertainty of measurement in checking a part has been made to tolerance?
added by Will.W Mar 14 '14 at 11:04
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up vote 10 down vote
Is there a ratio or established practice that determines how deep a structure must go in the ground relative to how tall it will ultimately become?
added by Stephen Collings Sep 26 '13 at 14:20
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up vote 10 down vote
How are random vibration loads calculated from an acoustic sound pressure level?
added by Stephen Collings Sep 26 '13 at 14:20
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up vote 10 down vote
Where can I find the Young's modulus for stainless steel cables?
added by Stephen Collings Sep 26 '13 at 14:20
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up vote 10 down vote
Stepper motor vs servo with encoder - what are advantages and disadvantages of each?
added by Stephen Collings Sep 26 '13 at 14:21
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up vote 10 down vote
How do I convert an AutoCAD 2010 DWG file to AutoCAD 2004 format?
added by Ben Miller Oct 8 '13 at 17:59
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There is a CAD proposal. You might want to post this question there. – NauticalMile Nov 5 '13 at 4:06
Tools-->options-->open and save --> choose 2004. – Mhmd Mar 1 '14 at 18:25
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@user689 The text of the question would probably explain that the OP doesn't have access to 2010, only 2004. – Ben Miller Mar 1 '14 at 18:59
up vote 10 down vote
How does the Young's modulus for [material] vary with [temperature, strain rate, etc]?
added by andy mcevoy Oct 8 '13 at 22:58
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up vote 10 down vote
What size fastener do I need for this joint? What should the fastener preload be?
added by andy mcevoy Oct 9 '13 at 21:38
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What kind of specifics are you asking for here? For steel design, the AISC Steel Manual has all the information you need in regards to bolts and weld strength and equations to use as far as design is concerned. As for other types of fasteners, I'm not sure. – Robert Dechant Dec 21 '13 at 4:02
up vote 10 down vote
How do I specify the GD&T (Geometric Dimensioning and Tolerance) for this [mechanical feature]?
added by andy mcevoy Oct 9 '13 at 21:52
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up vote 10 down vote
How would I go about sizing a motor for <application>?
added by NauticalMile Oct 10 '13 at 19:28
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up vote 10 down vote
In mechanical design, when should I favour use of thermosets over thermoplastics and vice versa?
added by NauticalMile Oct 10 '13 at 19:39
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up vote 10 down vote
What's the difference between 'margin of safety' and 'factor of safety' and where do I find the appropriate values to use for my project?
added by andy mcevoy Oct 11 '13 at 14:36
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up vote 10 down vote
What's the best way to model [X] using [finite element program X]? What limitations should I be aware of when doing this?
added by andy mcevoy Oct 11 '13 at 14:42
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Suspect that this is unanswerably broad still. How about "Which of these two ways to model [X] using [Y] is better..."? – Simon W Nov 8 '13 at 17:08
up vote 10 down vote
Which European norms discuss steel anchors in concrete?
added by Tim H Oct 21 '13 at 10:54
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up vote 10 down vote
Where can I find a formula for the directions of the principal axes, according to beam theory, of a beam with an asymmetric section.
added by Tim H Oct 21 '13 at 10:55
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To find the principle axis, use the same equations as with Mohr's circle with the corresponding section properties used in place of stresses. Ix = sigma_x, Iy = sigma_y, I_xy = Tau_xy. Leave a comment below and I can provide a google doc link with some old class notes. – Robert Dechant Mar 31 '14 at 3:53
up vote 10 down vote
Bending of steel rods: what is the limit for the radius of the curve?
added by Tim H Oct 21 '13 at 10:56
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up vote 10 down vote
Beam theory: What is the effect of uniform loading on a beam with an asymmetric section? Can it bend out of the plane defined by the loading?
added by Tim H Oct 21 '13 at 10:56
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up vote 10 down vote
What is an accurate way of measuring flow of a slurry with high solids content?
added by martin Oct 22 '13 at 14:10
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up vote 10 down vote
What is the most economical way to store gas under high pressure, aking into account both the cost of the storage and the energy for compression?
added by martin Oct 22 '13 at 14:12
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up vote 10 down vote
What are best practices for the safe operation of a biowaste to gas plant?
added by martin Oct 22 '13 at 14:17
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up vote 10 down vote
What is the process of transferring a license in [State/Province/Country] to [State/Province/Country]?
added by Matt Dec 13 '13 at 16:43
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up vote 10 down vote
How can one produce liquid air/nitrogen/helium/ etc. industrially?
added by kaine Jan 6 '14 at 20:42
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up vote 10 down vote
How do you "expand" slate for use as a light weight aggregate?
added by kaine Jan 6 '14 at 21:03
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up vote 10 down vote
What is the typical efficiency of hydraulic systems?
added by adipro Jan 28 '14 at 21:23
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up vote 10 down vote
Is there a gear system that converts oscillatory rotation to unidirectional rotation?
added by adipro Jan 28 '14 at 21:32
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up vote 10 down vote
What materials are best suited as seals for underwater applications?
added by adipro Jan 28 '14 at 21:57
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up vote 10 down vote
What is the typical efficiency of air turbines?
added by adipro Jan 28 '14 at 22:02
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up vote 10 down vote
How does physical damage affect the performance of photovoltaic cells?
added by David Schwartz Feb 26 '14 at 10:00
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up vote 10 down vote
What is the best oxygen/fuel ratio for a burner?
added by kaine Feb 27 '14 at 22:49
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up vote 10 down vote
How can I create a simple device to speed up ribbon cutting from rolls? Currently I measure them one by one and cut with scissors and it's very slow.
added by Terix Mar 20 '14 at 23:29
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up vote 10 down vote
Given the manufacturer's specifications and the expected operating conditions, how can I calculate counter-torque due to friction in a bearing?
added by NauticalMile Mar 31 '14 at 17:38
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up vote 10 down vote
How should one design a house to be cooled passively?
added by Chris Mueller May 7 '14 at 19:33
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I asked this question at phys.SE, but it was closed because it was considered an engineering question. – Chris Mueller May 7 '14 at 19:34
up vote 10 down vote
Are there any free and legal programs to view/edit Autocad drawings?
added by kaine May 27 '14 at 17:31
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up vote 10 down vote
In a typical lathe turning operation, how could I estimate the exerted reaction forces on the cutting tool with given material properties?
added by Alejo Jun 12 '14 at 10:34
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up vote 10 down vote
As an engineer, is a conservative design acceptable because it provides a higher factor of safety or does it waste the client's money?
added by hazzey Jun 18 '14 at 1:58
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In addition to the client's money, it's worth thinking about other inputs like energy, materials, personnel and time to completion. – Air Jul 29 '14 at 15:20
up vote 10 down vote
What kind of protection should I give structural steel in a natatorium (or other highly corrosive) environment?
added by CKrug Jul 11 '14 at 15:25
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