Engineering - November 2007

I have an entry level engineering interview coming up
and i have no idea what kinda questions they might ask me. I am getting really worried. I know they will ask me something related to Op Amps. I looked over my notes . I hope I'll be fine.
But when it comes to Volatage division , are they gonna ask me to solve a thevenin or norton diagram ?

what do you think ?

2007-11-18 13:12:31 · 3 answers · asked by Anonymous

2007-11-18 13:08:25 · 3 answers · asked by deshmukh s 1

2007-11-18 13:01:30 · 7 answers · asked by Stephen 2

and what are the possible components.

2007-11-18 12:28:01 · 5 answers · asked by double_drago 3

what are brushes or (spring loaded contacts) and How do they work?

http://en.wikipedia.org/wiki/Brush_(electric)

<-- it says what they do not enough on what they are physically.

Appreciated.

2007-11-18 12:19:51 · 1 answers · asked by double_drago 3

To be more specific I would like to see pictures of large steel beams similar to those used to contruct the world trade center buildings 1 and 2 so that I can compare the effect it has on the steel to that of the photos of steel people are talking about in a photo of Ground Zero that were cut at a 45 degree angle, and have slag on the outside of the beam. Welders tell me it should be on the side you are cutting through, not the side you are starting on. The photo I have questions about is here:

http://abovetopsecret.com/forum/thread315919/pg1

Please if you have professional knowledge of demolition, welding, or steel working, respond with your expertise.

Besides the video/pics I am looking for, Here are my questions:

Why would clean-up crews cut remaining beams at a 45 degree angle?

What does a purposely demolished steel beam look like after being cut with thermite/thermate?

Steel weakens at about half its melt temp, what if it is load bearing, any formulas?

Thanks

2007-11-18 11:48:43 · 3 answers · asked by thatblissguy 1

soil plough !

2007-11-18 11:42:48 · 1 answers · asked by Omid 1

I'm getting a B.S. in computer science this summer and I'm thinking of doing something else for my master's. I'm considering engineering because I'm strong in math and science and I want to have a challenging but steady job, but I worry because I've never considered myself to have an "engineer's personality" (I didn't really take things apart as a kid or play with constructor sets, etc.). I do like computer programming very much - it's like solving logic puzzles! - but I'm thinking to branch out and do something really interesting and difficult.

Are there any engineers or engineering students out there, especially woman engineers, who can tell me how they came to choose engineering and what their personality is like? I'm trying to find out if I'll be a good engineer, and what type is right for me.

2007-11-18 10:27:54 · 6 answers · asked by Lisa 3

A contest is being held to find the lightest, smallest volume, simplest, and least expensive package to contain 1 gallon of water when it lands on a concrete sidewalk after being dropped off the roof of building? ( a drop of about 125 feet).
a. Describe the approach that you would follow to package the water. The water must be contained throughout the process and there must be a high probability that the package will not break when it lands on the concrete.

Your answer's highly appreciated

2007-11-18 10:10:43 · 5 answers · asked by Patrick 1

A cable that is 26 feet long goes from the ground to the top of a building and forms an angle of 48.7o with the wall of the building. How many feet tall is the building?

2007-11-18 10:09:32 · 4 answers · asked by Angel 1

Ten points will be awarded.

2007-11-18 09:44:30 · 3 answers · asked by Sandy 4

The idea is already in a patent pending status. The device would need to be installed along the highways worldwide.

2007-11-18 09:23:52 · 1 answers · asked by rick e 1

Is it possible with a very large umbrella to glide off of a small scaled surface like a tree? I have seen it in movies but i didnt know if it would really work or not

2007-11-18 09:04:15 · 2 answers · asked by matt m 1

in the field of telecommunication

2007-11-18 03:56:40 · 3 answers · asked by Anonymous

trying to find a formula about tires to calculate traction, then in turn a reverse formula that might indicate the drag the tire would create in towing.

2007-11-18 03:35:28 · 2 answers · asked by guywill03 1

i am a freshman in advanced classes. i want a difficult engineering project.

2007-11-18 03:35:03 · 2 answers · asked by spyder_paintballer24 2

i am doing my first degree in software engineering. can i specialize in artificial intelligence and computer security?

2007-11-18 03:02:21 · 1 answers · asked by rocks_lp 1

2007-11-17 23:58:01 · 15 answers · asked by helpmeplease 1

First, if i have an engine with 6.5 horsepower at 3600 rpm, the torque is measured from the outside of the crankshaft of diameter 3/4", right? so if i put a sprocket on to drive a chain i have to divide my torque of 9.48 ft-lbs by the ratio between 3/4 and the diameter of the sprocket? does this affect horsepower AND torque or does the hp stay the same due to the increased linear speed?

Also, if i am supplying a certain amount of torque and hp to the rear drive sprocket, how do i figure out how much "thrust" i am supplying to the ground, say if its 40 ft-lbs on the sprocket and the wheel is 2 times bigger, do i divide 40 ft-lbs by 2 and get 40 pounds force, or what?

Ive been trying to figure this out for awhile so the more detailed the better, thanks.

2007-11-17 18:37:14 · 1 answers · asked by Jesse C 1

I asked this question last night and got an answer. The answer is totally appreciated, but my gut feel is there is something mathematically wrong here... I was expecting the wind speed to be upwards of 40km/hr, not .7km/hr. Would someone be able to review the math used in the answer? Thank you kindly.

The Original Question...

Convert CFM to KMPH?
ok... I have a fan with a 36" diam capable of moving 10,354cfm. The fan is mounted in a round tube that tapers down to a 2'X2' square tube. Through the 2' x 2' section of tube, approximately what sort of wind speed can I expect? Also, can you provide a formula that can help me calculate this for different CFM values.

The Answer I got...

2' x 2' = 4 square foot cross section
10354 ft3/min / 4 ft2 = 2588.5 ft/min
2588.5 ft/min * 0.000305 km/ft = 0.7894925 km/hr

This, of course, asuumes 100% efficiency. I hope this helps you.

2007-11-17 16:33:44 · 4 answers · asked by seanb_111 1

the additive used are coated particles of halide,e.g calcium chloride,coated particle of an alkali metal hydroxide,e.g.sodium hydroxide

2007-11-17 15:56:20 · 1 answers · asked by Anonymous

Thermodynamics

2007-11-17 15:36:31 · 3 answers · asked by Anonymous

2007-11-17 14:25:47 · 6 answers · asked by bobbinbop20 2

A regular staple curves in, toward itself. What's the purpose of the one that curves out?

2007-11-17 14:06:40 · 5 answers · asked by downrightdoomsday 1

Please help me solve for x

2007-11-17 12:49:57 · 3 answers · asked by Paul G 1

i have a lab report to submit on monday a.m. it's incomplete help find the definition of compressive strength of concrete and the factors affecting it.

2007-11-17 12:27:37 · 0 answers · asked by brownsand_2007 1

If I were to construct a fan 5ft in diameter and I wanted that fan to spin at 40 mph how big of an electrical engine would I need, or rather how many rpms' would it take to acheive that speed?

2007-11-17 11:18:59 · 4 answers · asked by Andrew 3

what is it, what does it do, and how much is it worth?

2007-11-17 10:48:37 · 2 answers · asked by Anonymous

like cast iron, mild steel, alloy steel, stainless steel, and tool steel

2007-11-17 10:16:14 · 3 answers · asked by condesa 1

Ok i am building a bridge for my science fair project. i am building a trsuss bridge but i dont know whats the name of the support on the top called. its like a roof plzz help

2007-11-17 08:45:57 · 4 answers · asked by Anonymous