Engineering - December 2007

that i can set to a light that turns on when that beam is broken and remember a straight beam that detects nothing but something or someone breaks that beam?

2007-12-29 15:19:18 · 2 answers · asked by Anonymous

also tell me about tele immersion.could u give the answers long , understanding and elaborate.

2007-12-29 14:35:26 · 2 answers · asked by manu 1

Can somebody please show me a picture of how I can show wall height in an architect's drawing of a floor plan (for new wall construction). Also, I need to see what the drawing of "how the wall is anchored" looks like. Thanks much.

2007-12-29 13:53:12 · 2 answers · asked by Brunei 2

would it be possible to attach a thermoelectric coupling to a ammonia (absorbtion) type fridge? The TEC could absorb heat from the inside and add heat to the outside ammonia boiler, possibly not needing the gas or electric original source. The TEC would require power but overall setup may be more efficient.

2007-12-29 12:08:25 · 2 answers · asked by Anonymous

I have a small heater which has 2 heat settings: High (1500 watts) and Low (750 watts)
110V I live in Los anegeles and I wanna know how much does it use electric per Hour ?

2007-12-29 10:33:23 · 6 answers · asked by Anonymous

A child is sleeping in a room with a breaker panel mounted in the wall just above her head. The panel is a 200 amp service. The panel is in an adjacent room. Is there any concern due to the proximity of the panel. Not concerned about shocks, just some electromagnetic waves. Like what has been rumored about high voltage transmission lines.

2007-12-29 10:23:35 · 9 answers · asked by Anonymous

A 100mA supply I have, which worked fine, is now broken. I also have a 800mA supply. Since they both have12VDC outputs, but the mA outputs are different, can I swap the higher mA for the lower mA and not have a burn-out problem?

2007-12-29 09:56:46 · 9 answers · asked by Mitch B 1

I have to find out what items can be used as conductors for bulbs. I will have to find out which items allow it to go through and how effectively will it go through? Why do some make it brighter? How come this one doesn’t light up?

I am testing items like nails,rubber bands,foil,copper,etc.

Please help me decide what types of items work the best

2007-12-29 07:18:12 · 8 answers · asked by MentoKings10 2

2007-12-29 07:05:06 · 4 answers · asked by Anonymous

has anyone ever heard the difference between an amplifier and an oscillator? would this make a sustainable power supply? sort of like using the motion of current instead of actual current? the current loop or like a whirlpool effect?
is it not sort of seen in solar cells, this one at an RPM level?

1. 20 amp - several batteries & switchable reserves
2. 750 watt - several power inverters for ? Kilo Watts

parallel for more amps at voltage
3. 5 amp vacuum motor - ac rpm torque motor
4. 5 amp - feedback deep cycle battery charger
5. 5 amp int 50 amp out - alternator with rectifier & regulator

6. solar cell pack for recharging too possibly.

a no oil - no pollution - power supply
the ac motor driving an alternator?

2007-12-29 06:30:36 · 3 answers · asked by stevenos_2005 2

2007-12-29 05:48:33 · 4 answers · asked by samuel B 1

2007-12-29 05:16:35 · 10 answers · asked by Rokkam N 1

... with modern updates like steel beams, reinforced concrete supports, electrical and telephone wiring, co-axial and fibre-optic cabling, plumbing, natural gas, heating, cooling, etc.?

2007-12-29 04:56:45 · 2 answers · asked by temporos 3

2007-12-29 04:15:01 · 3 answers · asked by ? 3

want to eventually hard wire, what size wire(230volts), 500' from house

2007-12-29 04:07:32 · 12 answers · asked by glyn r 1

2007-12-29 03:24:54 · 9 answers · asked by Anonymous

2007-12-29 02:41:13 · 7 answers · asked by AtheelKK 1

Have you ever wished computer to do something for you?
What's the thing you wanna the computer help you in?
Imagine the properties of the perfect computer in your opinion?
Imagine .. Think .. and tell us !!

2007-12-29 01:36:53 · 3 answers · asked by Anonymous

2007-12-29 00:19:57 · 2 answers · asked by Anil B 1

2007-12-29 00:19:28 · 6 answers · asked by ASHWINI neils bohr 1

I want to study engineering at some point. Should I apply for jobs as a CAD operator to get some sort of experience ?

Are companies going to be willing to someone who needs training without experience ?

I was hoping to be able to study at night for a few years.

What do I need to get a job as a CAD operator and get into drafting ?

Civil is the desired discipline ?

I'm 24 and I have a non engineering degree.

2007-12-28 20:36:31 · 6 answers · asked by Anonymous

Why Are They Placing Cube Rock On The Ground Before They Build A Building?

2007-12-28 18:46:05 · 3 answers · asked by Eugene WTC 1

2007-12-28 18:13:43 · 7 answers · asked by Dennis Z 1

looking for a theory behind damage due to collisions in automobiles!!!!!
please suggest some sites or any source of information.

2007-12-28 17:45:53 · 13 answers · asked by Anonymous

I want to know what tools and parts I would need to make an electric vest. What would I need besides a multimeter to read and control amps to the heating element? What kind of wire would work best and how can I determine how long a wire I can run for the 9v battery? In other words what is the limit to how many feet of wire a 9v batt. will heat to produce a vest that will maintain enough warmth to be effective as winter wear for hunting from a stand. Some ideas about how to experiment with different ways to make a heating element that will achieve the premise of staying warm. How can I use resistors and or rheostats to control temp or a combination of both. This is something I want to experiment with and so the more diverse the ideas to reach the goal the better. Thanks in advance, I'm looking forward to the responses.

2007-12-28 17:12:43 · 3 answers · asked by ed m 2

http://manuals.elenco.com/manuals/m-2666k.pdf
Anyone can tell me, the ground of this circuit is connect to where?
I think this circuit ground is not connect to negative terminal of 9V, just all ground connected together only, is true ?

2007-12-28 15:52:04 · 5 answers · asked by lwy 1

propeller motor being used

2007-12-28 15:17:02 · 2 answers · asked by Anonymous

2007-12-28 15:09:02 · 2 answers · asked by Anonymous

i only wish to experiment with miniature rockets for my education and entertainment
thank you for your help

2007-12-28 14:06:22 · 5 answers · asked by Anonymous

I must not know my own strength. I have several different radios that have different telescopic or telescoping antennas and I seem to have pulled one section out of its mating section on each of them.

Is there anyway to repair these antennas? I mean I can re insert the smaller portion, allong with the copper looking extra tabs, back into the larger diameter antenna portion. However, I don't know how to bend or curl the ed to the larger diameter section back into a lip in order to once again "permanently" capture the smaller section within the larger section.

Is there a special tool for this? Can you provide a link to a picture or drawing? Is there a special technique to do it using ordinary tools?

Thanks

2007-12-28 13:51:56 · 1 answers · asked by cato___ 7