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| Unique Visitors: 0 |
| Total Unique Visitors: 1 |
| Visitors Out: 27928 |
| Total Visitors Out: 31876 |
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| Temperature rise in copper busbars |
| 2008-07-05 13:38:24 |
What is the temperature rise in the following PVC sleeved copper busbars used in electrical panels at an ambiant temperature of 50 degree centigrade when carrying the full load (rated) current continuously.
(1) 1 no 40x10 mm busbar carrying 1200A
(2) 1 no 60x10mm busbar carrying 1600A...
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| high gas prices,high air pressured tyres |
| 2008-07-05 12:23:05 |
Hi to all of you.
What do you think about the following idea:
I think that if the tyres of cars will be replaced to high air pressure tyres,it will increase mpg through reducing rolling resistance.I am aware that this will cause braking and...
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| If there some chemical that eventually substitute gas? |
| 2008-07-05 12:11:17 |
Will be great to know is down the road there's will be some real suff that will replace the use of the common petroleum gas product so expensive that is ridiculiuos. I know everyones agree but the challenge ahead for the 'Chemical Industry' will be create some kind of combustible replacement in...
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| Internship in an oil/gas sector - africa |
| 2008-07-05 10:24:45 |
Hi frnds,
can anybody help me do ma internship with an oil/gas company in africa or middle east. i a control & instrument technician with a gold processing plant in Ghana. i even paln to read ma MSc sooner next year, 2009.
waiting for your support guys....
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| Disposal of Askarel Transformer |
| 2008-07-05 10:21:19 |
Hi..
What is procedure for the safe destruction of Askeral-filled Transformers and contents. In which country has the specialized facility for that purpose, and why this facility not available everywhere.
Could anyone can help me in this subject.
Jobinjosin....
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| Heavy-Duty Hybrids: Say it Ain't So! |
| 2008-07-05 08:18:00 |
Admit it: there's nothing that gets the blood moving like a piece of heavy construction machinery. Whether it's a powerful bulldozer pushing tons of gravel to make way for a new highway, or an excavation rig on treads digging for a new bridge foundation, these iron behemoths of the construction indu...
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| Cause of Ozone Depletion: Two Engineers |
| 2008-07-05 08:16:00 |
Surely they can't be held solely responsible for its demise, but two refrigeration engineers were convicted by a New Zealand court for depleting the ozone layer. The men, prosecuted in the first case tried under a 1996 law protecting the ozone layer, released chlorodifluoromethane HCFC22 while repai...
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| Pressure reducing valve |
| 2008-07-05 05:25:31 |
Hi all
Would like to know about availability of a pressure reducing valve to reduce water pressure from 100 psi to 50 psi. Preferably compact and should have an itegrated NRV at its outlet....
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| AUTOMATIC ALARM SYSTEM |
| 2008-07-05 04:52:46 |
To problem solver friends, pls i was given an assignment to construct an automatic alarm system that will sence intruders especially at night. I would have prefer if i can get praticable cct diagram for this CLEMENT....
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| ideas about career for feature |
| 2008-07-05 04:26:22 |
iam an BE electrical and electronics engineering graduate i had completed my BE on April 2005 i had started my job in instrumentaition Field and iam having 2 years experience in Erection Commissioning and 1 year experience in maintenance field can u suggest me how to improve my career and what way...
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| Bio Diesel in Freelander 2 2008 |
| 2008-07-05 02:26:49 |
I wanted to run my new Land Rover Freelander on 100% bioiesel.The manual says 5% mix with mineral diesel to keep warranty on board.I do not usually pay much attention to these but also do not want a bill for a new engine in three months.
Any thoughts or opinions?
Thanks Martin...
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| IGBT, SMPS and like |
| 2008-07-05 02:04:27 |
Would some readers explain variouis elctronics control like IGBT /SMPS/FETA in respect to its use with conversion of AC to DC by say Thyrsitors, for Chargers/ Discargers . Being a non electrical person , but coming accross these names frequently , I would like to know
what are the purpose of...
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| mini truck chassis |
| 2008-07-05 00:35:07 |
I m going to develop a chassis for mini truck
can some body suggest me how to go ahead with this i mean the slection of side and cross mebers...
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| Engineers of the American Revolution (Part 2) |
| 2008-07-05 00:01:00 |
They're as American as haggis and Scotch, Gouda and bloedworst, or coq au vin and champagne. Robert Erskine, Simeon DeWitt, and Louis Duportail may not be household names, but their contributions to the American Revolution burn as brightly as fireworks on the Fourth of July. Here are three more...
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| Question about Hinda Generator |
| 2008-07-04 23:26:49 |
Dear All
I have a second hand Honda generator 220V, 5KVA for domestic use. If I run the generator with 90% load, it consumes almost 2.75liter petrol in one hour. Most of the time the generator run with 30% load and some time with 90% load. I want to know after what period I should change its...
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| Drive |
| 2008-07-04 23:13:13 |
Why in AC drive or 3 phase inverter, output voltage is not measurable with respect to earth if output is of pulse width modulation ?
is it possible to draw only singe phase load from 3 phase inverter output ? if yes how?
because inveter output has only 3 terminals,...
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| Stopping Spam Simply |
| 2008-07-04 08:16:00 |
There are many different ways to stop spam, but the simplest is to charge a few cents for each e-mail. This stops the "stupid spam" that typically garners one response out of a million, but doesn't impose an undue financial burden on legitimate e-mails. Is charging for e-mail the best way to stop sp...
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| Engineers of the American Revolution (Part 1) |
| 2008-07-04 00:01:00 |
They're as American as kielbasa and cabbage, lobster and baked beans. Thaddeus Kosciusko, Richard Gridley, and Rufus Putnam may not be household names, but their contributions to the American Revolution burn as brightly as fireworks on the Fourth of July. Here are three engineering heroes your h...
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| How are Fireworks Made (Part 2) |
| 2008-07-04 00:01:00 |
So how are fireworks made? If you read Part 1 of this two-part series, you're ready to delve into the details. This is a dangerous subject and a secretive topic, however, so information is hard to find on-line. Fortunately for you, I've dug deep and found plenty to share. Because what I learne...
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| The Longest Virtual Run - ASEE (2) |
| 2008-07-03 16:44:51 |
As I explained last week, I attended the 2008 American Society for Engineering Education (ASEE) Conference in Pittsburgh. One of the booth I visited often was the exhibit of Dassault Systemes, the great French software company (creator of Catia, Delmia, and owner of Solid Works, among others). They...
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| Photos: Engineering New Orleans, post-Katrina |
| 2008-07-03 15:03:59 |
From CNET News.com:
As part of Road Trip 2008, CNET News.com reporter Daniel Terdiman recently stopped in Orleans">New Orleans. First, he wrote about the fact that many areas of the city are far from recovery, nearly three years after Hurricane Katrina. But even as some parts of the Cre...
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| Thinking Green with the 'Humvee of the Air' |
| 2008-07-03 14:39:08 |
From CNET News.com:
Another entrant in the race to produce a ducted-fan-propelled, vertical-take-off-and-landing UAV, the planned "humvee of the air" will morph to different missions and reach targets three times faster than helicopters, according to the manufacturer. The offici...
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| lubrication faults on a 250 ton brown boggs mechanical press |
| 2008-06-30 16:40:37 |
I am asking for your help on an issue we are having with our 250 ton Brown Boggs press. We are getting numerous lube faults on our press, and getting conflicting information from both Brown Boggs, and Trabon(manufacturer of lube system), on what the pressures need to be at for the system to operate...
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| June 30, 1977 – Cancelling the B-1A Bomber |
| 2008-06-30 16:01:13 |
On this day in engineering history, U.S. President Jimmy Carter cancelled production of the B-1A bomber, a long-range aircraft that was designed to carry nuclear payloads deep within enemy territory. A former nuclear engineer and submariner, Carter cancelled the long-running B-1 program to foc...
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| What are Lasolets? |
| 2008-06-30 15:14:37 |
What are Lasolets? How are they welded? or what kind of welding is done on them? where are they used?
What are laterals?...
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| Micro master Siemens Inverter420. |
| 2008-06-30 15:06:58 |
hi my friends ,
I face Micro master Siemens Inverter420 & 440 problem .Daily one Inverter damage.
mostly inverter module inside sparke( module burst )& magnetic contactor melt then breaker trip . Tell me solution in this problem.
my Email Address. zaintts@yahoo.com...
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| Selecting Pipe Sizes |
| 2008-06-30 14:19:57 |
OIL & CAUSTIC TO BE REACT TO FORM NEAT SOAP IN MIXER THE VISCOSITY IS 150-1500 cP. WHEN MIXED CONDITION IT IS 150cP.THIS WILL BE TRANFERED AT 15M3. PUMP CAPACITY IS 30M3 4 BAR g.PRESSURE AT DISCHARGE.BUT USING GEAR BOX WE REDUCED TO 15M3.Mixer bottom is cone , bottom nozzle elevation is 1500mm....
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| 'PistolCam' firearms shoot in more ways than one |
| 2008-06-30 13:41:59 |
From Crave: The gadget blog:
The PistolCam a device designed to fit onto regular pistols or even small rifles. When removed from the holster, the camera automatically starts to record video clips (with audio) at 30 frames per second for a maximum of 60 minutes. It can also capture...
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| smoke vision |
| 2008-06-30 12:16:40 |
can we see through smoke in fire accident to extinguish fire ? because smoke drops the visibility to an extent that one cann not see and hinder the fire fighter....
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| Just in time for (U.S.) Independence Day |
| 2008-06-30 11:59:17 |
Here is the old chestnut--To celebrate Independence Day I shoot my 2nd Amendment-protected firearm into the air--at a muzzle velocity of 2000fps and shooting straight up, how long will it take a 175-grain bullet to return to the ground [assuming it doesn't strike anything] and will it strike the gr...
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| Equivalent Uniform Load Acting on Beams |
| 2008-06-30 11:29:08 |
Hi everybody.
I have a question regarding equivalent loads on beams.
We have a rectangular panel with Short(S) & Long(L) span. According to the formula of two-way distribution of loads; equivalent load on shortest span is wS/3 and in longest span is wS(3 – m^2 ) /6 where:...
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| Pneumatic metric fittings |
| 2008-06-30 11:10:57 |
Hello everyone I am trying to find information on the different types of pneumatic fittings. Some type of chart or table would be great. My project will be using NPT, G and R type fittings. I know very little about the G and R type threads. I don't know how to spec them out on the drawing for manufa...
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| DIY Backyard Pond |
| 2008-06-30 11:05:00 |
This is the new pond / fountain I built in our the backyard. The basic concept arose from the three urns that we found at Garden Ridge. The copper balls float around in the water and strike the copper chimes - it's subtle, you can barely hear it on the video, but it's just loud enough in person....
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| insulation test |
| 2008-06-30 10:33:23 |
Hi Can anybady help me. how can i test motor insulation resestance and what recommendation value.
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