# General Engineering

- The design, building, and use of engines, machines, and structures. For any engineering topics not applicable to the categories below.
 Meta Thread / Thread Starter Last Post Replies Views Pinned: YOU!: Fix the US Energy Crisis ( 1 2 3 ... Last) We always have threads on various pieces of the puzzle, but what I want here is for people to post a coherent plan of... Nov30-13 02:24 PM Astronuc 944 184,690 Pinned: Sources of Information on Engineering ( 1 2 3) A number of questions, particularly involving homework, often involve some basic engineering. In the US, the... Nov22-13 03:02 PM rneale 38 47,873 In response to the growing needs of our membership, we're excited to announce the restructuring our Science Education... Oct12-05 02:47 AM Moonbear 0 19,241 Hello, Budding entrepreneur here looking for help. I've had this doubt for a long time. I can read the pump... T 07:55 AM Baluncore 1 178 I have to design a system to increase the relative humidity in a bunker. I would like to use a spray nozzle and... Y 12:35 PM Avis 6 452 The term yield strength is always bugging me deciphering the actual use in some cases. If I had a plate 3m x 2m 30mm... Dec5-13 11:56 PM J4rH34d 6 413 Can anyone help me with a formula to calculate the output of an airlift pump for a certain head, pipe diameter and... Dec5-13 10:18 PM Red Dog 2 478 I know that a beam suspended in two ends can have many modal shapes. However, when it comes to unsupported free beam... Dec5-13 11:43 AM AlephZero 1 330 This is bothering me way more than it should. Ever since I saw the following image: http://i.imgur.com/iUZsw3Cl.jpg?1... Dec5-13 11:28 AM AlephZero 5 674 Like the title says I was wondering if it would be possible to generate a couple of watts of electricity from a... Dec5-13 07:44 AM Stanislaus 3 594 Dear Experts Good day to you all. I am trying to find out does it take much electrical energy to keep... Dec3-13 08:59 PM Bobbywhy 4 395 I know that if a force is applied off center (as in: not in the center of gravity), one can split them up in an equal... Dec3-13 06:27 PM Seppe87 8 445 Since high school, I've read on yahoo front page and similar sites about how the nation has a major shortage of... Dec3-13 10:50 AM S_Happens 5 634 I know that motion today is usually generated by - generating a varying magnetic field and varying it in... Dec1-13 10:42 PM Gibsons77 8 689 My question is: Researching two sizes of square steel tubing to use for a project. material 2 inch square tubing... Dec1-13 01:10 PM nvn 5 498 Hi there, I just bought a in a newer condo (5 years old) and have noise and vibration coming from the... Dec1-13 08:51 AM AlephZero 4 455 Hi, is there a website that gives the detailed design and technology of various devices/equipment and/or... Nov30-13 08:31 PM chaturnar 0 458 I'm confused about how spread is calculated. Looking at the FHWA Drainage Manual, page 4-9 (pdf page 99) gives a... Nov29-13 09:49 PM jjj888 0 327 Could anyone explain the method of finding the circumferencial and longitudinal stress for thick cylinders? Nov29-13 08:27 PM rock.freak667 1 397 I wanted advice I saw that DC supply, function generators, and Digital Oscilloscopes were really expensive and I... Nov29-13 06:16 PM Student100 1 444 Hello, I've got a question about thermodynamics tables, in some tables pressure is given in bars and vf= a number... Nov29-13 02:07 PM bigu01 3 607 Dear Forum, Could you please help me with one question related to pressure vessel Maximum Allowable Working... Nov28-13 05:00 AM Neitrino 0 352 Hi, Would any one know where I can find a submersible bilge pump that understands a 1-2ms ppm signal at 50Hz? I... Nov27-13 06:25 PM billblack 5 530 I just got an Atomic Clock and googled how they work. It says it picks up the Atoms in the Air and sets the Clock... Nov26-13 03:35 PM Baluncore 11 640 We have two circuits in the figure. For each find I and V. The answers are a) 3 mA, 3V b) 4mA +1 V. This isnt... Nov25-13 05:05 AM litup 3 615 Hey everybody, I have a case with which you might be able to help me out a little bit. Together with 5 fellow... Nov23-13 08:52 PM Baby Incubator 6 963 Hi, I had this power electronics lab experiment where we control the speed of a separately excited dc motor using... Nov23-13 02:13 PM Baluncore 1 766 hello im really new to engineering. i know the rock bottom basics of these stuff but really rock bottom. ... Nov22-13 12:17 PM Travis_King 9 743 OK, before I get into the main question, I figure I should give a little background. First off, this is not... Nov22-13 04:02 AM Flyboy 2 662 Hey guys, I'm new to this forum and was hoping to get a clear answer regarding the difference between 1D, 2D and 3D... Nov21-13 07:42 PM boneh3ad 5 603 Hello It would be awesome if anyone can help me with this. The center of the top wall of my microwave oven seems to... Nov20-13 09:07 PM etudiant 2 735 My brother is a professional plumber and I'm a physics major, so he often comes to me for explanations of some of the... Nov20-13 07:04 PM Travis_King 3 704 Hi, This isn't my field at all so please excuse my ignorance. Let's say I have a pipe positioned at 30 degrees... Nov20-13 07:03 PM Simon Bridge 3 628 Hello, I am trying to get a grip on the basic relationships in hydraulics. I do not need the advanced math and... Nov19-13 06:26 PM Travis_King 2 933 Hi all, I am in the prototype phase of an invention and I need part that I can't get made and was looking for a few... Nov19-13 11:21 AM blkexp98 2 545 I live in the USA and have an HP Laptop G62M Series. I know I can buy a new Battery from HP but they are around $... Nov19-13 08:14 AM SteamKing 1 738 Hello, Does anybody know/had experience with software that can turn 2D images to 3D models in CAD program, preferably... Nov18-13 09:35 AM timthereaper 3 688 Hi So I'm trying to find out how much force a tin can, can support before failing. The can will be stood up as it... Nov17-13 09:35 PM AlephZero 7 759 I wanted to know if there is any Kits out there or how I can make a Hand Held Genarator? I am a P.C. Repair Tech... Nov17-13 09:07 PM Flyboy 6 588 Hi Lets say i need to transmit a lot of visible light from one place to another. Is this possible to do on long... Nov15-13 08:20 PM Flyboy 13 2,586 Hello, I am looking on building my own water bike after finding out that they start around$1700 like the one... Nov15-13 07:47 PM billblack 3 945 If you need to cross a bridge and you have reason to worry about its load-bearing capacity, do you choose to drive... Nov15-13 06:58 AM Feynman Bongos 6 668 Hi guys and gals Long story short I'm trying to make an magnetic levitator (like you can see on youtube), basically... Nov14-13 09:54 AM Heero2100 0 650