Engineering - July 2007

I need to buy some power converters...

2007-07-13 10:45:14 · 2 answers · asked by Anonymous

Understanding that 1 kw is 1,000 watts, how long does it take for a 100 watt light bulb to consume 1 kw? In other words, if the ONLY item consuming electricity on a dwelling is a 100 watt light bulb, how long will it take for the electric meter to register 1 kw?

The electric company doesn't know. (?)

2007-07-13 10:29:21 · 7 answers · asked by acydskull 4

Does the beginning of a electrical circuit always has be negatively charged?

2007-07-13 10:28:58 · 7 answers · asked by Anonymous

Is there any scientific research about the health hazards of the cell phones? And where are they?

2007-07-13 10:05:50 · 5 answers · asked by BlueSky 1

an electric fan use? I have an electric fan in my room for when the weather is hot or humid - I have got quite used to sleeping with the noise now so often leave it on all night.

Am I going to have a massive electricity bill because of it, or is it quite economic to run?

2007-07-13 09:28:54 · 7 answers · asked by Em x 6

2007-07-13 09:00:24 · 8 answers · asked by Anonymous

how i can making a simpel robot ?

2007-07-13 08:48:47 · 3 answers · asked by Anonymous

electrons are flowing from -ve terminal to +ve terminal.... but we say the current flow is from positive to negative..can anybody explain me the logic?

2007-07-13 08:48:14 · 5 answers · asked by kuttan 3

I have an object which is 80 degrees centigrade, with the ambient air around it being 26.667 degrees centigrade, the air will be blown directly on the object at a tempureture of 21.111 degrees centigrade. Does anyone know approx. how many CFMs pumped in at those tempatures will be required to cool the 80 degrees centigrade down to approx. 60 degrees centigrade? Or does someone have a formula to figure it out? If you have a formula that is correct or gives a close aproximate but needs more info. I can fill in anything else just provide the formula please.

2007-07-13 08:47:05 · 5 answers · asked by socomsniperaj 2

The wiring is done so that the single phase power supply is just one of the 3 phases. Am i correct that this single phase/line is 3.3KVA ?? and, is ir possible to wire the 3 phases together to give me 10KVA (or higher than 3.3KVA) SINGLE phase power?? It seems that the welder is not getting enough power...??

2007-07-13 08:37:29 · 4 answers · asked by SMILEY 1

What is the difference between a AK-47 and a AK-74. Which Country manufactures these weapons. We are looking to the way the re-booting of the AK-74 makes the weapon preform.

2007-07-13 08:22:59 · 5 answers · asked by Shaun S 1

i need to know the manufacturer of this type of transistor

2007-07-13 07:23:04 · 2 answers · asked by princess p 1

Check this site out
book7. co.uk and read the 17 things on the top

2007-07-13 06:35:00 · 3 answers · asked by Anonymous

Does anyone know who invented digital electronics or the history of it? or who was the first in applying discrete value codes in electronics?

2007-07-13 06:00:55 · 6 answers · asked by Ludovico 2

express periodic impulse delta T = sigma of (delta (t-nT) for n from - to + infinity in terms of exponential Fourier series Cn using exponential Fourier series.

2007-07-13 05:40:32 · 1 answers · asked by 037 G 6

2007-07-13 05:17:18 · 2 answers · asked by Dan 1

i.e. - low grade decomposable polymers, cellulose, something from an abundant shrub or herb (papyrus)

2007-07-13 04:57:07 · 7 answers · asked by 15fsg546rge1rrheljh45hjr90459ty3 3

2007-07-13 04:22:14 · 4 answers · asked by murali 1

SEWER RELATED

2007-07-13 03:58:14 · 2 answers · asked by djenneve13 1

2007-07-13 03:32:01 · 9 answers · asked by Anonymous

Under certain circumstances we can "explain away" certain dependencies. I am looking for the complete form and not one without a phi or theta dependence. Also, can this be represented as a series?

2007-07-13 03:17:11 · 3 answers · asked by gravelstatic 1

A. 15 A
B. 20 A
C. 25 A
D. 30 A

2007-07-13 02:18:36 · 2 answers · asked by d.o.g 1

A. plain solder without flux.
B. both plain solder and an acid.
C. acid-core solder only.
D. rosin-core solder only

2007-07-13 02:14:38 · 2 answers · asked by d.o.g 1

2007-07-13 01:49:11 · 2 answers · asked by Anonymous

I'm looking to a career in mechanical engineering. What needs to be done?

2007-07-13 01:14:25 · 3 answers · asked by ? 2

2007-07-13 00:47:33 · 4 answers · asked by aakash s 1

actually we forgot to add water proof to the plaster and now the walls r plastered what measure can be taken its urgent please be fast

2007-07-13 00:41:21 · 4 answers · asked by sakshi 1

2007-07-12 22:55:33 · 3 answers · asked by anmarie 1

relevance of gravity on an object to fall 300 meters

2007-07-12 22:48:09 · 2 answers · asked by james c 1

2007-07-12 22:39:11 · 5 answers · asked by Anonymous