Engineering - July 2007

It's a window unit and i'm in the middle of an argument with my friend.They are supposed to.Am i wrong?

2007-07-19 09:57:48 · 6 answers · asked by Anonymous

2007-07-19 09:50:46 · 2 answers · asked by abstact_illusionist 1

the cylinder-shape mold has 6cm diameter..but does the formula IRCUMFERENCE OF A CIRCLE=PIE TIMESZ DIAMETER right? and why? i dont get it

2007-07-19 09:50:20 · 4 answers · asked by ↕•||||•↕ 1

Im going to make a real life Transformer, and Metal Rubber is the perfect material for this project.

2007-07-19 09:08:29 · 5 answers · asked by Tyler C 2

2007-07-19 08:27:45 · 10 answers · asked by veena 1

I've invented a simple way of converting with no tools, any upright vacuum cleaner that takes bags (working on bagless design) to a dust-free, bag-free, and FILTER-free! system.
Without giving up the ghost, it has one thing that needs to be done at each use which requires a simple 'less than a minute' procedure. This is it's only negative, but in my observation it is actually a positive because it 'makes the vac owner take care of the vac. As opposed to neglecting it. After all it is the neglect that ultimately ruines a vacuum cleaner.

2007-07-19 07:53:46 · 3 answers · asked by paulj0557-vacuum cleaner expert 3

2007-07-19 07:24:01 · 2 answers · asked by John S2005 3

2007-07-19 07:19:55 · 4 answers · asked by John S2005 3

Have an old PC switching power supply with a component labeled DA1 in its circuit board. Can anyone tell me what it is? It looks like a glass enclosed, small signal diode but with only a black band around its middle, not at one end such as a diode would have. I assume it's not a diode as elsewhere on the board there are other components I see as diodes which have a marking band around only one end, they are labeled D1, D2, D3, etc., and the board markings indicate which way these parts should be oriented on the board. The markings for DA1 do not indicate any such orientation, as would be necessary if it were some kind of diode. Might anyone know what this part is?

The switching supply seems to work only every umpteenth time power is applied to it, and the DA1 component's location in the circuit appears related to the main switching circuit's initial starting drive for before the main regulation pulse width feedback loop gets going. Identifying its function seems important.

2007-07-19 06:36:49 · 4 answers · asked by C J 1

2007-07-19 06:26:00 · 1 answers · asked by JAMES 4

2007-07-19 06:22:12 · 3 answers · asked by Dave 2

im going to have a battle of the torches whos torch lastes longer no rules
heres my ideas use white birch torch http://www.wwmag.net/barktorc.htm
i made a small one on a stick it lasted 20 minutes so what can i do to make it better like adding stuff to it

p.s. i need a flamable item that burnes long no torch fluid
butan gas i can use

2007-07-19 05:58:50 · 3 answers · asked by Anonymous

2007-07-19 05:57:21 · 16 answers · asked by Anonymous

2007-07-19 05:15:33 · 5 answers · asked by srinivasan j 1

We can create AC from DC - the best example is House hold Inverters. We can inturn create DC from AC- Best example is mobile phone charger producing 15 v for ex. So why cant we generate Continuous AC for our house hold equipments and loop the same power needed for generating AC. Just we can loop back DC and generate AC. We have optimum power booster circuits which requires little power to run and boost the input voltage to a max level. Then we can convert to AC again. A little AC can be used to generate DC as a back loop input. So we can get a continous source of electricity for the whole house. Why cant any scientist do this? I am from electronics and comm engineer. But i cant design a machine. But why cant others? We have so many scientist in this world. WHy nobody tried it?

2007-07-19 05:10:55 · 4 answers · asked by ASH 2

I am trying to work the following problem, but I am not sure what is being asked. "Find the negative of the two's complement form of 0.0101100(subscript-2cm)?"

2007-07-19 05:10:17 · 4 answers · asked by wcr98 1

With school summer vacation starting tomorrow I would like to see the fencing around the electricity UK substation at Fairfield Scalby Stockton-on-Tees repaired as a matter of urgency to prevent the death of another inquisitive child.

2007-07-19 05:02:26 · 4 answers · asked by Anonymous

I know that you can make a lightsaber with a high power laser beam and a block at the end, but is it possible to have a concentrated beam of laser that can only go so far and all that jazz!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!???????????????????????????????????????????

2007-07-19 04:56:54 · 10 answers · asked by Anonymous

2007-07-19 04:35:59 · 6 answers · asked by b1expressway 1

Do you think it could get all the legalities and meet all the requirements to own? Would the government take it away from me if I accomplished it?

2007-07-19 04:20:47 · 10 answers · asked by a2z_alterego 4

I hav studied that we can convert a DC to AC. But for perfect AC we need a rotor to rotate around a magnetic field and thus we get AC.There are generators which run on diesel/ fuels in general. We hav Invertors which convert DC to AC depending on their capacity.So why nobody created a equipment which can generate AC without any continuous source like fuels/ Battery.My question is very clear.Is it not possible to create a POWER PRODUCING MACHINE which can GENERATE POWER FROM DIESEL IN THE BEGINNING TO START / BATTERY TO START AND THEN CONTINUOUSLY PRODUCE AC.Just looping the power generated by the generator to AN ELECTRICAL CIRCUIT so that it gets the power and so it can generate more power needed for a full house.Making it a loop.Getting power AS INPUT AND Generating ELECTRICITY.If we have this kind of machine then we dnt need to pay government for the electricity.we dnt need to burn so much coal. If we didnt burn coal for electricity then we can save atmosphere too.Y NOBODY DID THIS?

2007-07-19 04:12:35 · 6 answers · asked by ASH 2

Where should I start in the creation of myy own Robot.

2007-07-19 03:47:15 · 4 answers · asked by Lushes Touch 1

2007-07-19 03:07:59 · 4 answers · asked by Ashi 1

Given:

P=100 watts
R=100 ohms


Find: Voltage





Kindly show all necessary and important solutions. Really need it. Thanks.

2007-07-19 03:02:06 · 8 answers · asked by Anonymous

2007-07-19 02:55:33 · 2 answers · asked by jonathan d 1

A steam pipe exploded in New York. I feel stupid here, but what is a steam pipe? Are they in all states? Why would there be steam in a pipe and where does the steam come from? I love Yahoo Answers.

2007-07-19 02:31:35 · 10 answers · asked by ? 2

2007-07-19 01:49:46 · 3 answers · asked by heMei 1

2007-07-19 01:46:42 · 10 answers · asked by ramjan begum 1

2007-07-19 01:09:41 · 4 answers · asked by Anonymous

Size of the copper is: 20mm x 9mm x 730mm. And how you calculated it?

2007-07-18 23:26:18 · 2 answers · asked by zaid 1