Engineering - September 2006

Wouldnt straight panels be easier to build? What about a more efficient footprint? What about all the waste involved in cutting a round top?

2006-09-15 21:42:00 · 14 answers · asked by Dan V 2

there is a lot of researches and papers or studies about using "the Artificial Intelligence" in the field of architecture design or environmental design !

2006-09-15 21:02:10 · 7 answers · asked by Ayman Al-Hafeth 2

can somebody please tell me an application of digtal filters(low pass would be great) that would be easy to simulate in matlab.
specifications would be also great.

thank you.
best answer would be choosen.

2006-09-15 20:36:28 · 1 answers · asked by tronic_hobbist 2

is it true that the first atom bomb was developed and made in washington state?, if not then where?

2006-09-15 20:31:20 · 3 answers · asked by Anonymous

2006-09-15 18:41:53 · 16 answers · asked by mypfsman 2

the space ships to be thrown into the space when the generated fuel will be exhausted?

2006-09-15 18:38:34 · 7 answers · asked by wacky_racer 5

2006-09-15 17:56:00 · 11 answers · asked by anoop 1

If hydropower is the clean energy source that it has always been, why not find new ways to use it in places where it wouldn't displace anyone like in secluded rural areas? They would make excellent tourist attractions for fishing and scenery. Another thing I ran across is that all too often the water that could be used to generate power just goes over the top of the dam instead of running it through the generators. I want to hear the common person’s opinion on why or why not to use these almost free energy sources.

2006-09-15 17:52:34 · 6 answers · asked by Maybe I know, maybe not 2

I understand that switching power supplies (such as those used in computer power supplies) can use small, light transformers because they convert AC to DC and then convert the DC to high frequency current before stepping the voltage down through a transformer. For a given wattage power supply, a switching power supply is much smaller and lighter than than a non-swithching supply because it can use such a small transformer. Why does a high frequency allow a smaller transformer to be used?

It seems to me that for a given wattage supply, whether switching or not, the same amount of power passes through the transformer. Since only the frequency of the input voltage is changed, but not the voltage itself, the currents in the transformer's windings should also be the same for either supply type.

What is it about high frequency that allows a smaller transformer to be used?

Thanks!

2006-09-15 14:58:19 · 6 answers · asked by Lisa D 1

2006-09-15 13:58:03 · 7 answers · asked by Chris I 1

They have bullet proof vests but why don't they have bullet proof pants and full sleeve jackets? Can't they have a mask as well?

2006-09-15 11:19:47 · 9 answers · asked by bigboywasim 2

2006-09-15 11:00:52 · 4 answers · asked by G.K.Buchan 1

I have a need for a mechanically powered DC generator. When looking for vendors online most(or all) products are coupled with a motor. Since I'm looking to convert already existing rotational energy into electrical energy, I do not need the motor.

2006-09-15 10:07:08 · 7 answers · asked by CoolFlutie 2

2006-09-15 09:38:07 · 6 answers · asked by CoolFlutie 2

modern weapons used by infantry soldiers in combat

2006-09-15 09:17:18 · 5 answers · asked by niks 1

I am taking an introductory drafting course and need to know if I am reading the scale correctly.

2006-09-15 08:43:22 · 8 answers · asked by Ana M 2

I have a power source that supplies 1.5V at 0.1A.
I want to change the current to 0.3A (without changing the voltage). Is this possible by connecting a resistor in parallel?

2006-09-15 08:30:25 · 6 answers · asked by Anonymous

Just to do some engineering graphics!

2006-09-15 06:18:47 · 3 answers · asked by tuh g 1

2006-09-15 04:54:57 · 6 answers · asked by Anonymous

Fluid mechanics problem....should be easy! Ha.....water boils at 90 degrees C....what equation do I use to find altitude?

2006-09-15 04:53:53 · 6 answers · asked by Anonymous

2006-09-15 04:51:44 · 5 answers · asked by Anup C 1

it have to go 50 feet. it can't have additional force other than gravity and wind.

2006-09-15 04:25:23 · 8 answers · asked by Alisha B 1

I have interest in electronics, i want to learn how to design a practical electronic circuit.can you advise any good book for beginers.i have basic theoretical knowledge of electronic hardware.

2006-09-15 04:21:08 · 6 answers · asked by harvinderdevgan 1

2006-09-15 04:03:52 · 3 answers · asked by prasanth e 1

why does an object when moving in speed more than its centripital force on a circular path moves opposite in the direction of the center of that circle

2006-09-15 03:13:07 · 4 answers · asked by Anonymous

2006-09-15 03:04:00 · 1 answers · asked by a 1

If I want to build a powerplant which one do I choose.

2006-09-15 02:58:37 · 12 answers · asked by Nando Cerna Honduras 1

I didn't think that the small amount of voltage difference should matter but I was not sure, because I know when you try to power something with a lower voltage it tends to over-heat. Thanks in advance.

2006-09-15 02:50:34 · 6 answers · asked by paintballer_1312 1

2006-09-15 02:43:13 · 10 answers · asked by Anonymous

2006-09-15 02:29:37 · 10 answers · asked by grozav n 1