Engineering - May 2007

2007-05-27 19:57:26 · 4 answers · asked by simphiwe m 1

The Material is to be used to fabricate offshore structure.
What are effects of offshore climate on these materials.
What will be ideal equivalent of BS7191355 EMZ.

2007-05-27 18:55:32 · 3 answers · asked by sandeep c 1

2007-05-27 16:18:26 · 3 answers · asked by ronan 1

For me to save electricity, When I’m not studying I will use the 10 watt light in my room. The problem is when I want to study my homework, the 10 watts is not sufficient enough to illuminate my vision. So I installed another 20 watts fluorescent light to have a brighter radiance. Im just wondering, if there such a switch that can control the two lights one at a time. I tried to paste my diagram to further elaborate but it wont paste on this site.

110v (a) ---------------------->

on (for 10 watts light)
110v (b)----------------> off
on (for 20 watts light)
^
110v (a) -------------------------->^

2007-05-27 14:54:55 · 3 answers · asked by OLA A 1

2007-05-27 14:41:10 · 2 answers · asked by 723 1

Suppose a company delivers 540kW of power at 12kV thru wires that have a total resistance of 2.5 ohms. How much power is saved by delivering the power at 87kV rather than 12kV?

I read in my textbook that {power lost due to heat} is proportional to R*I^2. I also know how to get the right answer. I just don't know why (I messed around with the numbers and somehow got the right answer).
The procedure to get the right answer is:
P = IV (what does P represent here?-power from where?)
(540kW) = I (12kV)
I = 45 A for the delivery at 12kV
Then: P = I^2*R = (45^2)(2.5) = 5062.5
Another question here: what does this P represent? Why are there 2 "P's" in the problem?

Repeat procedure for 87kV
P = IV
Solve for I.
Then: P = I^2*R = 96 A
Then the correct answer is obtained by subtracting:
5063 - 96 = 4967 = 4970 W
They give the answer as 4.97 kW.

2007-05-27 14:22:42 · 3 answers · asked by J Z 4

My zippo just ran out of fuel, and i dont want to buy the regular zippo fuel. Are there any household items of objects i can use?

2007-05-27 13:56:52 · 6 answers · asked by Nick 1

I saw a news report several years ago that indicated that a light bulb with a life span of five years had been invented. I have not come across one at a retail outlet.

2007-05-27 13:27:59 · 11 answers · asked by hhass777 1

2007-05-27 13:22:31 · 1 answers · asked by Anonymous

I am asking this so I can save money instead of buying a 200 gimmick from www.ellusionist.com. Don't worry Im not trying to kill anyone, I just want to do this magic trick.

2007-05-27 12:08:38 · 4 answers · asked by zomgitsdrawn 2

e.g if a magnet is near a wireless connection, will it weaken the signal ?

2007-05-27 11:50:11 · 4 answers · asked by kimsy 1

In the United States and out to other continents ?

*Working in the United States but traveling throughout the u.s.a and other continents* ?

Thanks.

2007-05-27 11:34:40 · 6 answers · asked by Anonymous

Atom smashers are like powerful microscopes. The lengths they can measure are inversely proportional to the diameter of their accelerator rings. The most powerful yet are tevatrons, producing 1-trillion electron-volt collisions. Your job is to present a budget proposal to Congress for a particle accelerator capable of measuring objects as small as the Plank length---10^-35 meter. Can it be done for less than a $Googol?

2007-05-27 11:13:16 · 2 answers · asked by Anonymous

Smoke detector is wired to kill 24 Volts to 2 HVAC units.

2007-05-27 10:56:18 · 6 answers · asked by Anonymous

what i need is the minimum distance the wall footings can be dug from the waters edge ie to prevent disturbing the waterline line soil and bank and causing the building to subside

2007-05-27 09:15:04 · 3 answers · asked by alan P 1

i'm studying for the RIT DE exam tommorrow, so any help would be beneficial. thanks. Also, if known, what's the advantage of CMOS gates over TTL gates?

2007-05-27 09:15:00 · 6 answers · asked by Anonymous

2007-05-27 08:59:57 · 4 answers · asked by Jay-C 1

I'm reading this document to first understand the rotational dynamics of a spacecraft, and then to understand the Kalman filter that comes with it.

Problem is I don't know what bias and spatial accelerations are. I've googled these terms, but the hits I've recieved were not very good.

2007-05-27 08:54:03 · 1 answers · asked by Anonymous

2007-05-27 08:39:03 · 2 answers · asked by zohre m 1

according to son, something used to measure wind capacity - I am in medical field - no idea what he is looking for!

2007-05-27 06:56:08 · 3 answers · asked by Donna B 1

My school has installed a windmill, nd it helps to provided power for the fish hatchery there too. We only have one, but they want to expand in the program, do you think this is a good idea???? (Windmill also helps with the schools electricity bill)

2007-05-27 04:23:45 · 5 answers · asked by Anonymous

2007-05-27 02:24:08 · 1 answers · asked by Cathy C 1

2007-05-27 01:43:49 · 4 answers · asked by abdullah yousuf 1

cnc machine programming & technical problems

2007-05-27 01:34:09 · 4 answers · asked by ramji b 1

So I study both simultaneously?

2007-05-27 01:20:13 · 2 answers · asked by worried person 1

I am trying to purchase a rug but unable to figure out its price due to the difference in calculation conversions.
The rug size I need is 1.5 meter X 1.0 meter.
The manufacturer offered me a price of $6.4 per sq ft.
How do I calculate this to figure out the price of the rug I need?
Please help!

2007-05-27 01:06:36 · 5 answers · asked by Anonymous

2007-05-27 00:08:52 · 3 answers · asked by jonnavithula b 1

2007-05-26 23:16:41 · 8 answers · asked by chandan bharti 1

2007-05-26 22:02:27 · 7 answers · asked by juju 1

Mum is able to cook rice in two ways - in the (electric) oven at ~350F or in the microwave (on high). It takes half as long to cook the rice in the microwave. Both forms of rice are great, so which one uses less power?

2007-05-26 20:33:23 · 4 answers · asked by Anonymous