Engineering - May 2007

who can give me 3 example of how cracks arise in a component. it is very important, please.

2007-05-18 06:03:10 · 3 answers · asked by positivebigbill 1

2007-05-18 05:58:47 · 7 answers · asked by vibratingmukas 1

2007-05-18 05:46:13 · 5 answers · asked by M.H. K 1

- how much heat are PCBs expected to withstand?

2007-05-18 03:19:12 · 2 answers · asked by Anonymous

2007-05-18 02:30:32 · 7 answers · asked by Anonymous

2007-05-18 01:54:16 · 1 answers · asked by Anonymous

2007-05-18 01:16:48 · 5 answers · asked by Bob/Bev S 1

Hi there, I'm an electrical engineer. One of my friends who had a travel to Europe for passing a practical course relating to electricity has told me sth about a spray which is some kind of cleaner and helps removing dust and dirt from electrical connection points.
They could be used for cleaning electrical keys, fuses and many other electrical devices (for both High Voltage & Low Voltage) and when the connection points are clean enough,we will no more encounter things like arc, increase in electrical flow & ...)

I'm looking for the name and the manufacturers of this spray and I would be very grateful for any help from you .

2007-05-18 00:40:02 · 6 answers · asked by Hami . 1

additional questions:
- are bigger heat sinks also better heat absorbers?
- how come the heat sinks are not flat, what are the prong tops for? is there a reason why they are shaped that way?
- what is the melting point of CPU heat sinks?

2007-05-18 00:19:17 · 0 answers · asked by Anonymous

2007-05-17 23:29:13 · 1 answers · asked by bananaloves 1

in general approach

2007-05-17 22:44:20 · 3 answers · asked by wing 1

2007-05-17 19:52:06 · 12 answers · asked by Hoverit 2

would not driving with the window down create a drag and cause the car not to get as good gas mileage as if I had the cold air on.

2007-05-17 15:42:03 · 6 answers · asked by caveman 2

Thanks

2007-05-17 14:58:32 · 3 answers · asked by Anonymous

i was to derive the volume of cylinder using the incremental volume of a cube in a cylinder or sphere...right now the topics i will be on is triple integration in spherical and cylindrical coordinates....so probably it deals with values G(theta,radius,Z) and f(rho,theta,phi) coordinates, it also deals with integral limits....can anyone help me out? it would be of great help,thnx.

2007-05-17 14:11:36 · 1 answers · asked by Hansel 1

What is the total resistance of the circuit?

and

What current flows through the bell ?

2007-05-17 14:09:40 · 2 answers · asked by Anonymous

I need to construct a traffic light model/prototype, similar to those on our roads. Meaning it is of the same size etc. Can anyone assist me in guiding me the things i should get etc? My search on the internet for traffic light control circuit has given me some results. But i'm not sure if the same hobby kit circuit can be used for my model. Note that i am using multiple LEDs for my traffic lights. Meaning, multiple green LEDs are group together to form the green light. Same goes to amber and red lights.

2007-05-17 14:02:06 · 3 answers · asked by Anonymous

2007-05-17 13:32:46 · 5 answers · asked by Anonymous

2007-05-17 12:23:02 · 2 answers · asked by abert 1

WATER WILL BE DISCHARGED INTO A RESERVOIR. I HAVE A 42" I.D. STAND PIPE @ START POINT THAT IS 14 FOOT TALL. SO WITH 6 FOOT OF ELEVATION CHANGE I HAVE 7 FOOT OF HEAD PRESSURE TO WORK WITH W/O OVERFLOWING THE STAND PIPE. I WANT TO USE PVC PIPE (80# PIP)

2007-05-17 11:15:10 · 5 answers · asked by Anonymous

2007-05-17 10:33:58 · 5 answers · asked by goring 6

I have the distance and the differance in elevations but I can't remember if the % grade is the relationship of elevation / distance or the % of a 45 degree angle. I building a walkway for handicap people and the % grade can't be more than 5%. Aloha

2007-05-17 10:08:24 · 8 answers · asked by micky9fingers 2

2007-05-17 09:16:43 · 6 answers · asked by Anonymous

2007-05-17 08:14:17 · 4 answers · asked by Rohan 1

2007-05-17 06:38:50 · 2 answers · asked by Anonymous

2007-05-17 06:12:59 · 1 answers · asked by Always Hopeful 6

2007-05-17 05:26:17 · 4 answers · asked by Anonymous

2007-05-17 05:25:28 · 3 answers · asked by Anonymous

2007-05-17 05:14:50 · 8 answers · asked by jspencerfamily 1

2007-05-17 04:29:22 · 5 answers · asked by breezybaby_duh 1