Engineering - April 2007

Other than rubber "O" ring is there any material that can seal a rotor having pressurised air flow.

2007-04-15 11:32:11 · 2 answers · asked by Chinu 1

2007-04-15 09:24:19 · 5 answers · asked by hmac 1

i just cant seem to understand how it transforms. Any help would be great, exam is tomorrow. thanx
vp/vs=np/ns
transformed so that vs is the subject
vs= vp X ns /np

2007-04-15 09:16:00 · 6 answers · asked by Rebecca G 1

I have constructed a secondary for my TC on a 95 cm long and 5 cm in diameter PVC pipe using AWG 30 wire. It's about 3300 turns. The instructions i had mentioned a 30 turns primary on a 10cm in diameter PVC tube, but that didnt work out. Since i have too little time to go on the trial and error technique, could someone give me any pointers as to how many the primary windings should be or any formulas used to calculate them?

2007-04-15 08:38:01 · 4 answers · asked by Lukas H 2

Lincoln 250 D 7018 rods burn blue, instead of silver.
6011 & 6010 rods burn Blue and/or black

2007-04-15 08:02:17 · 2 answers · asked by Grumpy 1

is it at the point where deflection required or at the centroid of the beam?

2007-04-15 06:54:15 · 1 answers · asked by Red Falcon 1

I am doing this experiment with a homemade barometer, and for this presentation, I need to show that this barometer works. So, how do I instantly increase or decrease air pressure? Any ideas?

2007-04-15 05:58:33 · 4 answers · asked by ykk3416 1

2007-04-15 05:01:51 · 2 answers · asked by Anonymous

2007-04-15 04:21:22 · 1 answers · asked by Student 1

2007-04-15 04:10:24 · 1 answers · asked by neha gupta 1

2007-04-15 03:14:25 · 7 answers · asked by satan 1

please tell me what is the difference between static and dynamic char of bjt.?

2007-04-15 02:25:24 · 5 answers · asked by nishit 2

I have a transformer the top of it has a red wire and brown wire and the bottom has a orange and a black wire. This converts 110 AC to 24 DC and there is no wiring instructions for it. Just wondering if any one knows

2007-04-15 02:17:12 · 5 answers · asked by steady 1

Hi, i want to know the history of grinding machines.

2007-04-15 01:51:34 · 4 answers · asked by Anonymous

Just 6meters below 440 volt tower. Will it affect our brain cells in due course.
what is the safe distance to be maintained.

2007-04-15 01:20:26 · 3 answers · asked by alphapsmani 1

An air-filled parallel-plate capacitor with plate separation d and plate area A is connected to a battery which supplies a voltage V between plates. With the battery left connected, the plates are moved apart to a distance of 10d. Determine by what factor each of the following quantities changes:
a) V
b) capacitance, C
c) electric field, E
d) electric flux density, D
e) charge, Q
f) charge density
g) energy stored, U

2007-04-14 20:17:27 · 1 answers · asked by AlexTan 3

2007-04-14 19:51:28 · 6 answers · asked by espms290 4

Im gonna major in Engineering next year. What is the best text for Linear Algebra? Linear Algebra with its Application by Gilbert Strang? or Linear Algebra with its Application by David Lay? Or another one that you used?

2007-04-14 19:24:27 · 4 answers · asked by aprilzeinstein 1

Weather patterns will make a big differents for the first few test runs of the space elevator.

2007-04-14 18:47:10 · 3 answers · asked by Anonymous

What can you make from 10 board feet? from 100 board feet? from 1000 board feet?

A board foot is a linear measure of lumber equal to a square foot of wood one inch thick. So 10 board feet would be 10 square feet each one inch thick..


Can anyone give me examples of what can be built with 10 board feet? 100? 1000?

2007-04-14 18:30:35 · 6 answers · asked by i_heart_fatties 1

What do you need to build machines? I mean what do you need to build telescopes, PC's, Builing simple machines to create complex machines and stuff. Please tell me because after three years i plan to compete in the Intel Science Fair.

thx

2007-04-14 18:09:06 · 10 answers · asked by Anonymous

how do i decide which potentiometer to use for elecronics?

2007-04-14 17:57:44 · 5 answers · asked by some kid 1

Ok, so I understand what a transformer does. I have a step down transformer that changes the 120 VAC to 12 VAC. I also know that power in must equal power out. Which means the current is going to be ten times more on the secondary winding.

But here's where I'm confused; does this mean that 10 times more current will run through the circuit? Let's say that you've got the transformer, then off of that you have a 10 ohm resistor. So at 12 V this should draw 1.2 amps (if it were plugged into the wall). But if the current is supposed to be 10 times that, is it 12 amps running through it?

Or does 1.2 amps still run through it, but 12 amps is drawn on the primary winding?

I'm so confused!!!

2007-04-14 17:55:01 · 3 answers · asked by captinhankey 2

2007-04-14 16:51:19 · 5 answers · asked by Mufaddal Kazi 3

2007-04-14 14:57:26 · 7 answers · asked by usmanee 1

what is it?
how likely are you to get a job from it directly after college?
what is the working evironment like? (ex. desk job, office job, go out to different places, etc.)
how much do mechanical engineers make?
what do i need to do in high school?
what requirements or things do i have to know in order to become a mechanical engineer?
what's the purpose of the job?

2007-04-14 14:22:48 · 3 answers · asked by xcxf99 2

What are the advantages/disadvantages of each kind?

2007-04-14 14:09:41 · 3 answers · asked by Jdude 2

this litlle machines got four air tubes connected from its head to its body four pistons that go up and down the force of the air makes it snap neck collars together it is connected to air tubes from the big air compressor to the little air machine there are switches that make the air go through it can you tell me the name of this little machine

2007-04-14 14:08:32 · 3 answers · asked by nadine d 2

2007-04-14 13:26:13 · 3 answers · asked by Anonymous

2007-04-14 13:23:17 · 6 answers · asked by china 2