Engineering - November 2006

2006-11-23 12:25:22 · 7 answers · asked by Madan M 1

T:R2-->R2 is defined as T:(x,y)= (x+y,x-y)..
Using the bases B1=B2= {(1,-1), (-3,2)} find the transformation matrix.

2006-11-23 11:27:29 · 4 answers · asked by 10Ksmasher 2

in an evaporator at the expansion valve bulb the temperature is 10 degrees at say 30psi ( 2 bar ) is there a certain saturation temperature corresponding to the pressure of the refrigerant and can this be read of my gauges.. eg 2bar would be -10 with 134a

2006-11-23 09:47:31 · 2 answers · asked by sweetiboy 1

2006-11-23 08:53:14 · 17 answers · asked by ranman293 1

2006-11-23 08:51:41 · 18 answers · asked by londra l 1

Not the music conductor but the conductor for Science, If you answer that please give me examples of a insulator if you do taht i will give you a best answer!

2006-11-23 08:45:16 · 11 answers · asked by Anonymous

thermal insulator

2006-11-23 07:41:56 · 3 answers · asked by roro 1

2006-11-23 07:26:23 · 8 answers · asked by Anonymous

I need to know all the specific safety rules for specific tools accorindg to the Government of Alberta safety guide. Specific as in Drill, hammer, etc etc. A source provided would be very appreciated

2006-11-23 06:45:17 · 3 answers · asked by Anonymous

Hypothesis

If a ball rolls down a ramp that has a height of 8 inches and is 96 inches long, to lubricate the ramp the following items will be used Vaseline, car oil, liquid soap, vinegar, grease. Then car oil will be the best to lubricate the ramp grease will be second best, Vaseline is going to be third best, then liquid soap is going to be forth best, and vinegar is going to be in last place

2006-11-23 06:26:40 · 3 answers · asked by skater 1

2006-11-23 06:10:59 · 4 answers · asked by Anonymous

not

2006-11-23 05:44:27 · 1 answers · asked by Lady 2

I am trying to understand a certain ASTM standard for Fire Tests of Building Construction and Materials. The points that determine the Time-Temperature Curve for this standard are as follows:

1000F at 5 min.
1300F at 10 min.
1550F at 30 min.
1700F at 1 hr.
1850F at 2 hr.
2000F at 4 hr.
2300F at 8 hr. or over

I guess I'm just stupid... but what does this mean?! I know the definition of a time-temp curve is the thermal analysis curve produced by the plot of time vs. temperature, but does this particular curve mean that, as something (whatever kind of construction material being tested) is exposed to heat, it should reach a temperature of 1000F after 5 min, 1300F after 10 min, 1550F, after 30 min, and so on? Please help me understand this!!! Any helpful information about it would be greatly appriciated.

Oh, and Happy Thanksgiving! :-)

2006-11-23 05:41:52 · 5 answers · asked by litestim 2

2006-11-23 04:59:24 · 9 answers · asked by charity c 1

2006-11-23 04:57:39 · 2 answers · asked by ranjith 1

I have a problem with a operation I am using my Sunstrand CNC lathe, with Fanuc controls, for. I am turning the ID of a can that houses a Hermetic Commercial motor. I put the motor/can assembly on the lathe using the ID bore of the motor. I am cutting the ID of the can that contains the motor. The size of the bore is 4" and my expanding segments expand to .04 bigger than the bore and is 4.75 inces long. The problem I am having is that it is impossible to create a perfectly straight bore. At the cut end of the can I am allowed to have a runout of .006. I get runout readings from .002 to .012. My lathe arbor measures .0008 runout. The ID of the can being cut is 7.8" and we cut .0135 off for an area of 1" depth. The can is 14" long and the area being cut is around 6" past the end of the end of the arbor. Is the runout problem caused by the .0008 runout in my arbor or is the machine not capable of holding a .006 tolerance? Any real suggestions? I am not looking for a website. Thanks.

2006-11-23 03:47:20 · 2 answers · asked by dprut 2

2006-11-23 03:13:01 · 5 answers · asked by Eros 1

I used google but i did not get what i expected..

2006-11-23 03:06:27 · 4 answers · asked by Red Falcon 1

what types of engineers are allowed to join the ieee

2006-11-23 02:23:05 · 3 answers · asked by Anonymous

I want to replace conventional electric bulbs with LED's in my bed room. How can we assemble these LED's to get light which would be equal to a100Watt bulb.
Thanks!!

2006-11-23 02:09:18 · 5 answers · asked by smb 1

If so, normally how long is it?

2006-11-23 01:00:21 · 5 answers · asked by tianhaw91 2

2006-11-23 00:11:34 · 5 answers · asked by Rubaet M 1

Two stroke motors tend to have a statically set ignition point (generally at about 22 degrees BTDC) whereas a four stroke motor has an auto advance/retard mechanism with a static timing typically about 12 degrees BTDC. On a four stroke engine the advance unit is designed to allow for the burn time of the fuel/air mixture, which is relatvely constant, so that the spark must occur earlier the more the revs increase. Why is the same not true on a two stroke motor?

2006-11-23 00:04:11 · 5 answers · asked by Mark R 2

2006-11-22 23:13:17 · 13 answers · asked by CantCageMe 1

2006-11-22 20:30:01 · 7 answers · asked by boy boy 7

please give details of process..

2006-11-22 20:06:01 · 5 answers · asked by Warren 2

You know when you're filling up, the trigger begins to click? How does it do that?

2006-11-22 17:43:17 · 7 answers · asked by ♤ 5

my friend just zapped out the lcd screen on a game controler with a static zap.

2006-11-22 16:23:19 · 4 answers · asked by NO! 2

Please help me, thank you.?
I am 16 years old this year and i really want to know the way to study. I know that study is important for me but whenever i open the books then i will feel sleepy. Sometimes i after i study , the next morning i will forgot what i read yesterday. I really hope that i can study well but i cant. Please teach me the tips to study, thank you very much. My ambition is to becoming an engineer but im not clear about my ambition and i dont even know what an engineer need to study and do.I scare i choose the wrong ambition. Please help me up, thank you.

2006-11-22 14:58:50 · 9 answers · asked by evolutionf330q 2

What is the ieee, what do you need to be to join it, what training is required, what courses are needed in college, what occupations are they involved with, what they may be called to do, thank you for your time.

2006-11-22 14:43:58 · 1 answers · asked by Anonymous