Engineering - August 2007

Can anyone tell me what these are and how they are done? Or know a good site that has all this info? Hazardous waste landfill, waste treatment plant, deep-injection well, and incinerator.

2007-08-29 12:44:56 · 3 answers · asked by feastofmagic03 2

Something that is lightweight and pressure resistant. I have already tried pvc and it was to heavy. I thought about using a fluoresent tube cover because it is lightweight but will it be able to hold enough pressure. 150-200 psi

2007-08-29 11:49:16 · 3 answers · asked by BaseballDude#10 1

Doesn't it need to be insulated to make the current go round and round in circles?

2007-08-29 11:46:40 · 4 answers · asked by winter_new_hampshire 4

2007-08-29 11:01:28 · 4 answers · asked by i l o v e y o u ! 2

2007-08-29 10:17:47 · 14 answers · asked by i l o v e y o u ! 2

My tank is 30" diameter, and 90"' long. I know that it holds 275 gal. but what I would like to do is make a stick with markings on it that would indicate 25, 50, 75, etc. . Obviously the numbers would be further apart on both ends, but by how much. Thanks.

2007-08-29 09:46:45 · 6 answers · asked by KATHERINE W 1

A fellow that is SELLING says there is a unit that can be biult or bought that will allow a 3 phase (360 volts) eletric motor to be used with only 220 volts. Does anyone out there know if this is true? Since he is selling i am somewhat unsure.

2007-08-29 09:34:18 · 6 answers · asked by Zdaddysdinosaurs 5

(UK) I keep seeing small (about 12inch diameter) aerial/antenna/dish type things on the side of properties. What are they receiving/transmitting? They are flat and grey and puzzle me....

2007-08-29 09:13:44 · 3 answers · asked by fishears 2

2007-08-29 09:11:11 · 5 answers · asked by Anonymous

The setup: the bracket is a right triangle mounted perpendicular to a wall so that one leg (AB) is against the wall, one leg (BC) extends out from wall (these form 90degree angle) and hypotenuse (CA) is in compression (extending down and back to the bottom of leg AB) when a downward point load (1000lb.) is applied to point C. Points A and B are fixed to the wall with mechanical connectors. Legs AB and BC are equal length (2 feet). Assume frame and connectors are of adequate strength. Questions: What is the required shear strength of connectors at A and B? What is the pullout resistance or tension on connector at B? What is the compressive force on member BC?

2007-08-29 08:42:29 · 2 answers · asked by john s 1

My teecher said i was dumb and wast of space cuz i culdn't build 1.

2007-08-29 08:03:26 · 3 answers · asked by Anonymous

what relationship between cement and portland

2007-08-29 07:54:48 · 9 answers · asked by manoharan 1

I was interested because there is organization out there trying to build ai and i dont agreee with them i wanted to know how many people do.

2007-08-29 07:53:20 · 3 answers · asked by fran2621 2

2007-08-29 07:47:51 · 4 answers · asked by manoharan 1

I have a Bachelors Degree in Mechanical Engineering from University of Pune, India.
I have 1.5 years work experience in UAE in Building Mechanical Services, mostly HVAC.
I am currently working with a reputed construction company

2007-08-29 07:05:52 · 2 answers · asked by Nandan N T 1

i've built a one switch button system for a mame system to operate 240v(ie. to the monitor) from a 12v supply(computer) wired up to the mains, but i've now found out its actually got a maxium swicthing voltage of 125v,( an oversight of a yank selling ebooks in the uk) and i can't find out which relay i need or what type of relay i need the one i used was dpdt 10a at 125vdc from radio shack, tried a search in google and don't know what am looking at, i anyone knows which relay i need could you post a link to it plz

2007-08-29 06:32:37 · 6 answers · asked by smeggedup 3

I want to modify one of the electrical circuits in my house to run on a battery backup. To do this I want to break the circuit between the breaker box and the first outlet on the circuit and install onto the cut ends a standard outlet and plug. Into the outlet (leading back to the breaker box) I'd attach a large, true-sine output UPS. Into the UPS's battery-backed outlet I'd attache the plug (leading to the outlets and one overhead light). The UPS is rated for the full 20 amp load provided by the circut.

I know that this will work, but I am concerned about electrical code requirements. I realize this varies by locality (I'm in Omaha Nebraska), but I want to know if this is plan can possibly pass requirements.

2007-08-29 05:54:20 · 2 answers · asked by codesuidae 1

Excel calculation gone wrong need help?
I work a Amgen and I am having touble using Excel sheets calculating the following order :

10 ^ -690 ( ten to the negative 690th power), I always get theresult as zero (0).
Can anyone tell me how to define these numbers so the calculations and result express the exponents , i know the numer is extremely small but that is how it goes for this calculation. hope you undestand my question english is not my 1st or seconnd language.



it just occured to me what if i take the logarithm and express is it that way then at the end go back?

2007-08-29 05:24:54 · 6 answers · asked by Anonymous

I am trying to make this machine that I designed during the summer but am having trouble finding tiny wheels for it. the wheels would have to be 3/4in-2in in diameter and would prefer to have them made out of some sort of composite kind of like rollerblade wheels. I really like WM Berg for their gears and everything, but they don't have any wheels. If anyone knows of a company, preferably with a website, that sells a wide variety of tiny wheels please let me know.

2007-08-29 05:16:35 · 2 answers · asked by JoeSchmoe 2

How many times does a prototype need to fail testing before the design engineer gives up and moves on to something productive?

Does your answer in any way change if the engineer happens to be an insane female with mental issues?

2007-08-29 04:39:23 · 5 answers · asked by Anonymous

the fuels are being stored on an LPG fractionation plant...

THANKS :)

2007-08-29 03:45:35 · 6 answers · asked by <3 ...sEz... <3 3

what is mean by a "quantization level " in adc ? tell that in common language and with examples if possible . i did not understand much in wikipedia .
thx!!!

2007-08-29 03:32:39 · 2 answers · asked by Anonymous

1 have one 11kw motor 3 phase 415v. What is the minimum cable size should i use and which type of cable?

2007-08-29 01:49:33 · 2 answers · asked by kkxxx 1

If the power meter is said to be able to measure a certain range of rf power, why do they need the sensors? What exactly do sensors do for power meters?

2007-08-29 01:05:37 · 2 answers · asked by Bucfan 2

what is dispersive mixing?

1, to distribute filer particles evenly through rubber mass
2, to allow the ruber mass to absorb the ingredients
3, to break down agglomerates of filler particles into smaller units
4, to reduce the viscosity of raw rubber

which one?

2007-08-29 00:51:12 · 1 answers · asked by Anonymous

What angle is passed through by a flywheel which changes its speed from 1200 rpm to 1800 rpm in 1/2 min?

2007-08-29 00:31:47 · 1 answers · asked by mrbin45 1

I have to make a powerpoint presentation on a technical topic in my college so i want to know more about spring theory.Please forward the link.

2007-08-28 17:06:25 · 2 answers · asked by dude logic 1

I'm an Vietnamese graduate, I want to study abroad next year, could you please show me some famous scholarships for Master of Water resources Management??

And in case I can't get any scholarship, I want to study in the UK, which universities are famous for this degree ?

Thank you so much !

2007-08-28 16:20:42 · 1 answers · asked by Tran 1

2007-08-28 15:57:21 · 6 answers · asked by Eric D 1

2007-08-28 15:30:29 · 3 answers · asked by 3x2000 1