Engineering - May 2007

2007-05-22 13:23:05 · 1 answers · asked by HAROLD R 1

i am working on a project to create an induction coil and i need a supply of copper wire, insulated thast is. Does anyone know of a good supplier for insulated copper wire? About 100ft of wire on a spool..more or less. Does snyone know of a locsl supplier in Arizona? Thanks for any help.

2007-05-22 12:43:09 · 3 answers · asked by Gobi K 2

Which is characteristic of low head dams?
a. They pose hazards both above and below dams.
b. They pose few hazards to inboard-powered boats.
c. They may be crossed safely at a 45-degree angle to their faces.
d. They usually have strong recirculating currents just above them.

2007-05-22 11:12:56 · 2 answers · asked by lalalandbabe63 2

I think engineer is the person who does everything in balance. he/she might not know everything, but should find a way to get things going on. Not too much, not less, just what is needed...

2007-05-22 10:50:35 · 7 answers · asked by Remzy 4

i've been doing the shannon hartley law for my networking classes and i've come across this example in a book, but it doesn't explain how they got the answer.

the example is:
assuming a circuit has a bandwidth of 3000Hz and a signal to noise ratio of 20db, determine the maximum theoretical info (data) rate that can be achieved

SNR = 10 log10 (S/N)

therefore 20 = 10 log 10(S/N)
hence: S/N=100

so far i have gotten how they got this.

then it goes onto this:

now: C = B log2(1+S/N)

therefore: C = 3000 * log2 (1+ 100)
= 19,963 bps

its the log 2 bit that i am stuck on (the 2 is supposed to be a little 2 btw). when i type this in my calculator i get this answer: 91212.08869.

i don't have a log2 button on my calculator. so is there another way of working it out, (my uni is strict with what calc model we can use so i cant change it) or am i just missing something.

thanks

2007-05-22 10:31:55 · 4 answers · asked by Anonymous

Have searched drill bit manufacturing but have found no prices listed on the internet. Only to send them an email asking for quotes.

2007-05-22 10:22:54 · 2 answers · asked by Eiddy 1

2007-05-22 10:19:29 · 1 answers · asked by Anonymous

2007-05-22 09:53:31 · 3 answers · asked by Anonymous

Since electrical impulses are generated when the brain works, is it possible to harness these impulses as electricity for practical usage?

2007-05-22 09:03:27 · 4 answers · asked by Anonymous

2007-05-22 08:20:36 · 2 answers · asked by Aaron A 3

2007-05-22 08:10:25 · 4 answers · asked by Chaingang88 2

2007-05-22 08:10:25 · 5 answers · asked by Big T 1

i have very less time for the submission of proposal for my final year project...........

2007-05-22 07:51:17 · 7 answers · asked by labin 1

2007-05-22 07:07:27 · 4 answers · asked by iyvin14 1

2007-05-22 06:47:16 · 12 answers · asked by Lobster 4

I've been doing some calculations invloving torque and I'm having trouble relating my answers to real life. What amount of torque can realistically be achieved by an average person winding a handle with their arm? (ie. 5Nm? 30Nm? 100Nm?)

2007-05-22 06:27:44 · 3 answers · asked by $i 1

2007-05-22 06:27:08 · 6 answers · asked by ev1772 1

2007-05-22 05:47:18 · 3 answers · asked by nathaniel y 1

The voltage (amplitude) in the Tesla resonator doesn't directly depend on the primary voltage (amplitude), but rather on the power with which it is pumped. So it should be possible to achieve the same effect with a lower primary voltage (amplitude) as long as the current (amplitude) is increased accordingly in order to sustain the magnetic flux (amplitude), right?

2007-05-22 03:48:38 · 4 answers · asked by jarynth2 2

I am piping engineer. But I don't have any experience in jacket piping. Please let me know what is Jacket piping. How can I get more idea about this or else is there any website about the jacket piping?

2007-05-22 03:45:50 · 5 answers · asked by jayancjaa 1

If every home in America had wind power on there roof, we would be supply power to the utilities.

2007-05-22 02:37:23 · 4 answers · asked by powermanchief 1

2007-05-22 00:19:57 · 2 answers · asked by PHP 1

- a wooden model made from toothpicks/ ice block sticks
- length of about 1500mm.

2007-05-21 23:29:38 · 2 answers · asked by baleicoqe v 1

hunders of my friends said it is not clever to get the PHD before you go to work, they said it is hard for PHD students to get a job opttunite rather than Bachelor (because the starting saraly is higher than Bachelor, and all the big company don't like to hire one who high degree, but no work experience), is it ture? How I choose? and by the way, which university is good at electrical (I heard Monash), do USA need electrical engineer?
thank u guys.

2007-05-21 20:20:51 · 3 answers · asked by jojojojojojo 1

how to determine the size of ampere frame of a circuit breaker. for ex... 20 AT. is there any calculations for that to determine? or it is based on tables and standards?
please help..

2007-05-21 18:46:22 · 2 answers · asked by Rodz 1

2007-05-21 18:25:17 · 2 answers · asked by cha 1

I might attend DeVry University but I want to know more in depth what they do. I know their work with circuits and stuff like that please help.

2007-05-21 18:17:13 · 4 answers · asked by Gonz 1

2007-05-21 17:52:49 · 4 answers · asked by Anonymous

2007-05-21 16:17:55 · 15 answers · asked by Amanda B 2

whcih is it that supposed to have the largest voltage across it? Is it the largest capacitor or the smallest capacitor?

I connected a 1000mf, 100mf, and 10mf capacitor in series with 10V. THe 1000mf capacitor had the largest amount of voltage across it. I thought the smallest value was supposed to have the largest voltage across it.

2007-05-21 15:55:03 · 4 answers · asked by Anonymous