Engineering - September 2007

2007-09-06 02:56:27 · 1 answers · asked by Calchas 3

How can I control the RPM of an industrial motor of 7 horse power? I need it to have high torque and low RPM, like 100 per minute.

2007-09-06 02:31:51 · 6 answers · asked by Anonymous

2007-09-06 02:22:45 · 2 answers · asked by roberto a 2

I want to prove that something can travel at the speed of light


So i going to get a doll and hook it up to my thing and on the other side of the thing is a light switch when i turn the light switch the light bulb lights up and the doll moves to the other side and back of the sqare

2007-09-06 02:05:36 · 3 answers · asked by Anonymous

what do you think about producebility of low density steel? for example: can density of 1020 steel (or ony others) be decreased without any loss of other properties.

2007-09-06 01:40:21 · 2 answers · asked by irfank58 1

I have sunk a 50 meter bolehole with water from 9 meters all way down. I want to buy a water pump. I would like to know how big the pump should be. I want to have as much water as possible.

2007-09-06 00:58:55 · 3 answers · asked by Yamuseyo 1

Using solder joints, max. 125psi, length 30 feet.
... or must it be steel pipes? .... or 3/4" ?

2007-09-06 00:57:32 · 3 answers · asked by Marianna 6

now we are hearing fm ex 93.5 .is possibile to convert this signal to electric signal

2007-09-05 23:52:08 · 1 answers · asked by pandiya rajan 1

How many time a battery can be charged and discharged contineously?

Is there any formulae or table to caclulate the dicharge of a fully charged battery on its contineous usage?

Is it possible a battery charging contineouly when it is in use simultaneously? if so will it not affect the battery life? and what creteria we may need to monitor to maintain the battery life in good condition?

Is there any standard equipment readily available to monitor and cuttoff the battery when it fully charged and again to allow to charge the battery after a particular dicharge.

Is there any relation ship for charging and discharging of battery

2007-09-05 22:22:35 · 3 answers · asked by mahi 2

prob is:
1. from my knowledge, ic logic input/output give HIGH when reading value of multimeter >3.2volt, normally 5volt..whereas LOW when reading value of multimeter <1.8volt, normally 0 volt.. am i correct?
2. What happent when the ic logic input/outpu give reading between 2-3volt.. is it the ic been damaged and need to replace?

2007-09-05 20:54:44 · 3 answers · asked by gr8_halem 1

could some one please breiefly describe the function of major components of an upflow clarifier ??

please help

2007-09-05 20:48:47 · 1 answers · asked by Anonymous

2007-09-05 19:14:37 · 2 answers · asked by deepak_8584 1

the difference between the horse and the ass.
why does the goose never cross the chalky line drawn round about it?

2007-09-05 17:24:12 · 1 answers · asked by petlams 1

What is caused of ferrite (%Fe) to occur in the weld seam?
thank for any help...

2007-09-05 16:50:14 · 2 answers · asked by BOY 1

2007-09-05 15:19:41 · 1 answers · asked by tamilan 1

I graduated with a degree in Art 6 years ago. Now I'm a dissatisfied Dental Lab Technician. I'm good at math and I like to play around with machines and wood and wires and anything I can get my hands on. I want to make alternative energy sources that people will actually use. That (to me) says R&D mechanical (not as into the chemical), but I don't know any engineers. What kind of engineering should I focus on? What kind of classes should I take at my local college to get into grad school? Are there good online schools so I can still live and work normally?

2007-09-05 14:28:12 · 6 answers · asked by Pixiedyke 1

if it's unplugged, can i safely handle all of the parts without worrying about getting shocked?

2007-09-05 13:50:55 · 6 answers · asked by Alex 3

The diode, a very common two-terminal nonlinear device, can be modeled using the following current-voltage relationship:

I = 10^-9 * ((e^39V) - 1))

1) what is the effective resistance of the diode at V = 0.55 V?
2) at what current does the diode have a resistance of 1 Ohm?

answer 1 = 266 mΩ
answer 2 =514 mA

how????

2007-09-05 09:30:15 · 4 answers · asked by lennox lewis 1

2007-09-05 09:04:58 · 7 answers · asked by Alexander M 1

Hi, I am an undergraduate computer science/software engineering major who has an interests in AI (especially anything concerning artificial general intelligence). I am particularly infatuated with research and theories concerning creating an AI with capabilities similar to those of a human (which I realize is a LONG ways off in the future). But I do like AI in general from what I have read.

I already do a lot of reading and researching on AI, but it is usually just me aimlessly floundering for things concerning the topic. I would like to know how to REALLY get started learning about AI as a discipline. What are the fundamentals? Foundational theories and anything else I need to get started (apart from what I will inevitably learn in my undergraduate studies, I want to learn about the things that I might be taught in grad school if I can or anything else of interest)?

Thanks for your time.

2007-09-05 08:29:45 · 3 answers · asked by Lumian 1

how it goes frm off to on state

2007-09-05 07:13:14 · 5 answers · asked by Anonymous

Jobs such as companies that have missle/rocket/contracts through the government ?

2007-09-05 07:11:37 · 3 answers · asked by anjoek5859 3

Vesatile individual. Limited from lifting and or standing for long periodsot time due to recent back injury. 30 years experience assembling and repairing all kinds of things. Can do almost anything! Need Job Now!

2007-09-05 04:19:45 · 2 answers · asked by Anonymous

I know consumption increases with rpm, but in what proportions does it increase? Is it linear, e.g 2000 rpm is double the consumption of 1000. Or is it in the degree of 2 or something, like 4000rpm uses 4 times the petrol of 2000 beacuse it doubled. I know its a bit of a random question but there you go...

2007-09-05 03:35:19 · 6 answers · asked by quo287 1

what all machinery do we need for wood lamination? i wanna start a small scale industry which produces wood laminates and sells the laminates to the distributors.so, what all machinery do i require and how much will they cost??

2007-09-05 03:21:32 · 1 answers · asked by Anonymous

http://s223.photobucket.com/albums/dd78/floodtl/?action=view¤t=component.jpg

http://s223.photobucket.com/albums/dd78/floodtl/?action=view¤t=glowingpurple.jpg

2007-09-05 03:18:25 · 14 answers · asked by Anonymous

If an engine is rated at 260 Nm @ 1,600 RPM, how many Pound Feet of Torque is that?

Thank you!

2007-09-05 03:06:22 · 6 answers · asked by 2007_Shelby_GT500 7

I've seen flashlights that are powered mechanically(A mechanically powered flashlight is one of several varieties of flashlights that do not use batteries, but rather depend on mechanical movement by the user to generate enough electrical current to power a miniature incandescent bulb or light-emitting diode.). is it possible to create this to make a fan instead of light?

2007-09-05 02:06:58 · 6 answers · asked by melviely_mj 2

fourier seres and fourier transforms

2007-09-05 01:00:01 · 2 answers · asked by raghu n 1

According to wikipedia (http://en.wikipedia.org/wiki/Dyno_torch), a mechanically powered flashlight (or dyno torch) has a device called the flywheel that can store energy. From this, the user squeezes a handle to operate a small dynamo which supplies an electrical current to a miniature incandescent bulb for it to operate.

My questions are:
1. How much energy does it store in the flywheel?
2. How much energy do we produce every time we sqeeze the handle?
3. Is possible for this mechanism to generate enough energy (with a few modifications if necessary) to make a mechanically powered hand held fan (ex: http://a248.e.akamai.net/f/248/5462/2h/amplestuff.safeshopper.com/images/w0fks5v.jpg)?

Much thanks!

2007-09-05 00:16:38 · 4 answers · asked by Lena 2