Engineering - August 2007

2007-08-24 17:47:49 · 2 answers · asked by ritheesh_india 1

2007-08-24 17:09:51 · 8 answers · asked by nil 1

Hello everyone

A 240-110 stepdown transformer is used with quite a lot of equipement in my home and I have recently become a bit concerned about the effects that they have on the equipement.

Thanks to some web page I stumbled across saying that transformers can 'overheat' your equipement etc.

And since most transformers aren't made by any big name brands, there really isn't a way to tell if the one in posession is a 'high quality' one or not.

So my question is, do transformers actually damage your equipement?

Anyone have expertise in this area?

Thank you very much.

2007-08-24 15:51:24 · 7 answers · asked by Anonymous

2007-08-24 15:35:18 · 4 answers · asked by NXD 1

what is the example of the use of a ballistic pendulum in a forensic investigation?

2007-08-24 15:32:42 · 3 answers · asked by d300s 2

2007-08-24 10:18:02 · 3 answers · asked by Anonymous

I am making a report on Biomedical Applications of Laser where can i get some good animations or pictures related to it for making a ppt ??

2007-08-24 07:22:54 · 3 answers · asked by Buddy 2

explain your answer

2007-08-24 06:58:22 · 2 answers · asked by macgyver 1

Is there anything i can use to stop my sword from rusting that could be found around the house? I know most people use oils but im guessing vege, sunflower oil is completely different.

2007-08-24 05:52:03 · 7 answers · asked by dean v 2

2007-08-24 04:47:48 · 3 answers · asked by abdach2000 1

2007-08-24 03:18:14 · 5 answers · asked by Abubaker A 1

2007-08-24 01:56:30 · 3 answers · asked by Anonymous

2007-08-23 21:09:26 · 4 answers · asked by deepak_8584 1

2007-08-23 21:07:39 · 1 answers · asked by deepak_8584 1

If my antenna is connected to ground through a 50 Ohm resistor, or smaller, it's okay for reception still?

2007-08-23 21:01:27 · 4 answers · asked by rusty 3

2007-08-23 20:05:34 · 2 answers · asked by ANIL E 1

what are the differences between constant voltage and constant current power supply?
i really have doubt about constant current power supply, as i know current produced in a circuit may be varied according to it's load. somebody can help me??

2007-08-23 20:04:51 · 11 answers · asked by A learner 1

Cathodic protection of steel water tank

What are the best materials could be used for cathodic protection of a water tank made of St-37 ( 2000 liters, 4mm thickness) ? Could it be protected using a single place for the cathode with multi wire connections? Should the cathodic cavity whch contains cathodic materials isolated? And what are the design concepts to design this system.

2007-08-23 20:02:52 · 2 answers · asked by Anonymous

I would like to connect Line Out / Earphone to my Recording Device that only has Mic In and no Line In

Basically I just have to convert Line Out signal which is around 500mV, to Mic In which is around 2mV.

How do I do this, I just put a resistor between two connection. If so, how many do I need and how much?

2007-08-23 19:13:33 · 0 answers · asked by Anonymous

2007-08-23 17:21:47 · 5 answers · asked by badpony 1

I have a square room that is empty it measures 10 x 10. The height of the room is 10ft. I have an A/C unit that will cool 50 cubic feet in 8 minutes. How long will it take to cool all the air in the room. I am asking this because I suck at mathematics.

2007-08-23 17:12:50 · 7 answers · asked by Anonymous

Without drawing the rectangles, think about and then list all the possible rectangles with an area of 25 square units.

a) Sketch the rectangle you think will have the largest perimeter. Label its length, width, area, and perimeter. Describe its shape.

b) Sketch the rectangle you think will have the smallest perimeter. Describe its shape. Label its length, width, area, and perimeter.

2007-08-23 17:08:04 · 5 answers · asked by pepmey09 1

2007-08-23 16:49:41 · 3 answers · asked by Spence O 1

Years ago, I felt the frequent bumps. Now I don't anymore. Once in a while, I ride the Metra line in Chicago. I never feel the expansion joint bumps. How's that possible?

2007-08-23 15:19:36 · 4 answers · asked by L Dawg 3

He said that in the future, we will have no use for the steering wheel. All vehicles will be compact. They will constantly be communicating to the GPS system the vehicles speed, location, and direction. We simply select our destination on a map. The vehicle will use GPS to take us the most convenient route. We won't have windows because our vehicles will do some crazy stuff, driving on the left side of the street, running stop lights, and zooming between 2 other vehicles at 70 mph, because hey... all vehicles will be in constant sync with each other to avoid collision. Just in case the system does fail, your vehicle will stop in the middle of the road. All surrounding vehicles will be alerted to maneuver our your vehicle (similar to how a car breaks down on the side of the road). Older human-steered vehicle will have GPS attached to their car so that all the GPS system can locate them. They will be the only ones required to follow traffic laws.

2007-08-23 14:22:46 · 12 answers · asked by Anonymous

ie if a strong current was sent along a cable, say 100 miles long, would any current come out at the other end.?

2007-08-23 14:00:33 · 8 answers · asked by Anonymous

2007-08-23 13:51:08 · 2 answers · asked by JAMES 4

I am in my 3rd year of my Architecture class, and we are beginning to design commercial building designs. We were told to make it "green", meaning that they want me to design the building more environmentally friendly. How are some ways I can incorporate the "green" into my designs? (right now, we are designing a dentist office)

2007-08-23 13:26:25 · 3 answers · asked by Vinteal 4

Hi- I am looking to step up my business into a new 23,000 square foot warehouse in Florida. I am trying to estimate my electric bill with the air conditioning. The entire space will have A/C and the ceilings are 25 feet tall and the building will be insulated. I will keep the temp. around 80. I know it will be a lot but does anyone have any idea of how much, or a ball park idea for the summer months, $1,000, $2,000, $5,000 per month?

2007-08-23 13:07:29 · 1 answers · asked by bchandler14 2

Here is a picture of a knife and I was wondering what the purpose of the hole towards the end of the blade is.

http://spln.imageg.net/graphics/product_images/p3567612reg.jpg

The knife is large enough so it doesn't make much of a weight difference. Maybe it would be useful if you wanted to bend a piece of metal like a nail?

2007-08-23 12:54:47 · 4 answers · asked by lilfry14 3