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Engineering - April 2007

[Selected]: All categories Science & Mathematics Engineering

2007-04-18 10:26:41 · 3 answers · asked by hotpinkpunk2009 1

The electrical resistance(r) of a cable varies directly as its length (l) and inversely as teh square of its diameter(d). If a cable 16,000ft long and 1/4in. in diameter has a resistance of 3.2 ohms, what is the resistance of a cable that is 8000 ft long and 1/2in in diameter?

2007-04-18 08:46:06 · 6 answers · asked by Anonymous

the power tool says max input 2.8 kva. do i need a 3kva transformer to run this tool or is a 3 kva transformer to big. can i buy a smaller 1 kva unit that will run the tool?

2007-04-18 08:25:57 · 9 answers · asked by mike r 1

building a circuit with a small motor and a light.

2007-04-18 07:56:14 · 8 answers · asked by S A 3

where can i find complete,detailed info about addressing modes of 8051???

2007-04-18 07:55:47 · 3 answers · asked by jagananu2002 1

2007-04-18 06:43:56 · 13 answers · asked by ManuscriptRe 1

There is a bottle opener that i have that emits sound when you open a bottle. i took the one i have apart, and there seems to be a simple circuit board that facilitates the opening of a bottle with the sound it emits. I would need the circuit board that I'm working on to do the same thing. Does anyone know of a resource site where I could find a professional who can work with this, or does anyone have any suggestions? Thanks!

2007-04-18 06:37:02 · 6 answers · asked by George K 2

Have associate degree in electronics and have experience in cable harness assembly.

2007-04-18 06:29:10 · 1 answers · asked by Danny S 1

2007-04-18 06:16:53 · 4 answers · asked by twoskinsoneman 2

such as current in a branch, potential drop across an element.

2007-04-18 06:07:32 · 3 answers · asked by Anonymous

2007-04-18 05:38:56 · 6 answers · asked by micky 1

What is the practical application of Laplace Transform and Fourier Series in communication systems and Electronics, why we use it, is there any alternative.

2007-04-18 05:37:22 · 2 answers · asked by Kasprov 1

in a pig dicstion

2007-04-18 03:11:08 · 2 answers · asked by muffen 1

2007-04-18 02:49:16 · 3 answers · asked by khilal_07 1

in best of my knowledge capacitor only found in picco farad not available in farads.

2007-04-18 00:04:44 · 9 answers · asked by shatru 1

2007-04-17 22:28:46 · 1 answers · asked by sookeedee 1

its better if you can give me a good map from spaghetti bridge.

2007-04-17 18:48:45 · 3 answers · asked by eli 1

2007-04-17 17:59:02 · 5 answers · asked by cixaq 1

does it mean when the appliance works for 24 hours, it used 400 watts of electricity?

2007-04-17 17:37:25 · 5 answers · asked by ccruz_md 2

0

10 m into the air has a 2 cm diameter nozzle at ground level. The water pump is 2.5 m below the ground. The pipe to the nozzle has a diameter of 4 cm. Assume laminar nonviscous flow. Find the necessary pump pressure.

2007-04-17 16:39:01 · 3 answers · asked by Anonymous

By other I mean, non computer related. I'm mechanical.
If so, what kind of tests? Should I review my books before an interview?

2007-04-17 15:55:10 · 2 answers · asked by chocolateknight69 3

2007-04-17 14:04:34 · 4 answers · asked by kaczar r 1

It has me wondering what's the purpose of surveying a city block. Thank you.

2007-04-17 13:42:06 · 3 answers · asked by Aldo 78522 4

Here is the deal...

I have an IBM LCD monitor that I got on the cheap from Ebay, the issue was that it didn't have a base or a power supply.

Big deal, I thought because the plan was to wall-mount it and I had 6-7 old ac adapters lying around that would have roughly the same voltage and amperage.

So, now that I got it in the mail, I find that it requires a 12v 3.0 amp adapter. Unfortunately, all the adapters I have that provide enough amperage are all 19V or higher.

Back to the question, couldn't I just add a transformer inline with the output cable to step down the voltage to a level that will not fry the monitor?

Where could I find a step-down transformer that small?

2007-04-17 13:36:31 · 7 answers · asked by Bjorn 7

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