Engineering - September 2007

2007-09-19 06:05:59 · 3 answers · asked by Jeanette P 1

I use tin plating with thickness 5.5 micron over steel, when it undergo soldering at 220 degree C, the plated surface form cluster causing rough surface. what thickness should i use or other plating materials to be recommended to overcome rough surface? i had tried silver and gold plating, its good but cost too high.

2007-09-19 05:02:55 · 3 answers · asked by Erica L 3

2007-09-19 04:37:54 · 3 answers · asked by Anonymous

2007-09-19 04:16:21 · 5 answers · asked by moh 1

A. direct
B. alternating
C. neutral
D. electromagnetic

2007-09-19 03:25:43 · 21 answers · asked by blair g 1

2007-09-19 03:10:01 · 4 answers · asked by jim 2

All 1 ohm resistors.

2007-09-19 03:09:24 · 4 answers · asked by Anonymous

2007-09-19 02:59:15 · 3 answers · asked by Special K 1

This the pic:
http://chinaproducts.supplierlist.com/manufacturers/23211/V_T12864_A_L_C_M.htm

Data sheet :
http://www.varitronix.com/Product/graphics/MGLS12864T-XX.pdf


I want to know how to program for this LCD

Thnx

2007-09-19 02:56:22 · 1 answers · asked by Kudu 1

if not... what technology or method do you suggest that we can use or do to compensate for the errors of the INS?? (we have included GPS )

2007-09-19 02:44:39 · 3 answers · asked by e! boquiren 2

1. Express these two calculator displays in correct metric units: 5.6-07 2.2 05
a. 0.56 micro, 0.022 Meg
b. 56 micro, 22 kilo
c. 0.56 micro, 220 kilo
d. 56 micro, 220 kilo

2. What is the metric value of 16mA?

3. Which of the following terms are not a resistor rating?
a. resistor tolerance
b. resistor value in ohms
c. power rating
d. current

4. 500 milliA is equal to what?
a. 0.5 Amps
b. 0.0005 kA
c. 500,000 uA
d. all of the the above

5. Four resistors are connected in series across an 18 V source. Three resistors drop 0V, and one resistor drops 18 V. What's the trouble?
a. One resistor is open
b. The three resistors are open
c. Two of the resistors are shorted
d. There is no trouble: the voltages are normal

6. If each of the six resistors in a series circuit drops 5 V, the source voltage.....
a. equals 30 V
b. depends on the resistor values
c. equals 5 V
d. depends on the current

2007-09-18 22:37:28 · 2 answers · asked by Anonymous

When an instrument such as a themocouple or an RTD is not functuioning properly, how do you locate it in the process DCS or PLC, isolate it and fix it. Please you can use general terms not specific to a particular type of DCS or PLC. In particular I would like to know how to get the address of that instrument and its configuration etc

2007-09-18 21:26:11 · 3 answers · asked by kawuremi 1

2007-09-18 20:59:27 · 3 answers · asked by Phiedoe 1

2007-09-18 20:38:30 · 6 answers · asked by sivakali y 1

The used saftety razor blades(double edged, double side) create a disposal problem in this part of the land. I do not like to thro them in the dust bin.
Is there a method by which we can sharpen them & reuse?
Any one knows how they are sharpened during manufacture ? Is a steel ribbon is cut to shape & sharpened or is it a sharpend ribbon ?
How is it 'platinum tipped' ?
Any help is appreciated.

2007-09-18 19:10:40 · 4 answers · asked by kumarswamy v 2

Is not there a massive risk to the eco-system in the event of destruction from enemy fire?

2007-09-18 19:07:30 · 6 answers · asked by reclissezan 1

I'm talking about small quantities: less than 1000 mA.

When I say "in a circuit", I mean that I'm wondering how I can control how much amperage goes into an electronic component to make sure too much doesn't go in.

2007-09-18 18:43:01 · 5 answers · asked by Think. 3

2007-09-18 18:15:08 · 2 answers · asked by pbutter111 2

conventional process in construction industry

2007-09-18 16:33:57 · 1 answers · asked by azmi j 1

2007-09-18 16:28:36 · 5 answers · asked by cb_schulman 1

I`m canadian and we`re supposed to have been using the metric system and I remember being taught it as early as grade 2. But I`m 34 now, and I still don`t have a clue how many cm I am, I know I`m 5`1, and I know I weigh 120 but i have no idea how many kgs that is. I think in miles instead of kilometers, and i know there are 2.2 kg in a lb(I might have that backwards) and 454 g in a pound, but holy crap, the whole system is whacked. So I am looking for a page i can pull up and enter the m height of a guy i`m interested in (185cm) but that could be 5`2` for all i know and being 5`1 myself, well, thats too short for me. ANd he`s really hot, so I hope it means more like 5 10!!!!
Also i do a lot of shipping, and they always want cm and kg, but my measuring tapes are uncooperative, or I`m not doing it right. Any suggestions or perhaps the secret method to figure em out fast, would be appreciated!
Thanks!

2007-09-18 16:17:49 · 5 answers · asked by Anonymous

What class is it and where are the fulcrum, effort and load?

2007-09-18 14:46:14 · 1 answers · asked by just somebody 1

I am trying to transport logs over a rough terrain, I think the best method maybe to suspend wire cable between two trees and use an electric winch to raise the logs and then move the load along the cable.

2007-09-18 14:44:57 · 2 answers · asked by ? 5

I am messing with VERY VERY flammable chemicals so i need, like i said, spark less coins, i think ive heard that quarters don't spark?

2007-09-18 12:25:26 · 3 answers · asked by Anonymous

2007-09-18 12:07:22 · 3 answers · asked by Nap 1

2007-09-18 12:05:38 · 6 answers · asked by Nap 1

ask for more details if needed

2007-09-18 12:01:22 · 2 answers · asked by Anonymous

Express the area A of this cross section as a function of the diameter D (in cm) of the circular part

2007-09-18 11:52:16 · 1 answers · asked by ohoma 1

It would have a limited threaded section, and the smooth, socket side protrudes. I want to use the exposed part as a side-bearing surface, in a narrow channel where a regular cap screw head would be of too great a diameter. In that sense it would not serve the traditional purpose as a set screw, so it may have a different name. References appreciated.

2007-09-18 11:16:18 · 2 answers · asked by Jdude 2

2007-09-18 11:13:34 · 6 answers · asked by dmciscool2007 2