Engineering - March 2007

ahuhuhuhuhuhu... tomorrow I need to finish our project tomorrow waaa... its all about making a concept of a parking lot system meaning that i must make the concept of the whole system including switches, elevators, traffic lights etc... My god I am just 3rd yr COE but still i did'nt learned that much coz the instructors didn't thought us that us that much... ahuhuuhu... I just got finished with thet traffic lights system with swiches... but damn.. the concept of an elevator is damn hard to understand... 1st I had a 12v DC motor damn.... i know how to set it on its position for lifting... but theirs problems i encountered

1st is that how could a manupulated the up n downs of the elevator
by switching its poles with only one switch..

2nd when the elevator reaches the top or down how could it switch
its power to off..

3rd and finally after being off at the top how could i lock it with out letting if fall from the top.

2007-03-07 06:11:05 · 2 answers · asked by Chris 2

what would be a good site to for a project on selecting the gender of your baby through genetic engineering???????

2007-03-07 05:46:37 · 1 answers · asked by sara h 1

Hi,

I know that for a typical dc permanant magnet motor, there is a quadratic relationship between the power and torque,the same goes for power and speed. The max power occur at 1/2 the stall torque,this is also true at 1/2 the no load speed.

Can someone please tell me what is the difference between a constant torque and a constant speed motor? While choosing the right motor for an application(in my case a motor powered screw jack), I only look at the motor's power rating,voltage,max current,stall load and no load speed, i did not see in catalogs for dc motor, whether it is a constant torque or a constant speed motor.

Thank you.

2007-03-07 05:34:21 · 3 answers · asked by Anonymous

An object traveling inside a steel pipe needs to know its velocity. How can it measure its velocity without placing anything (like a wheel) in contact with the pipe?

2007-03-07 05:34:10 · 2 answers · asked by dogsafire 7

We only have paper, pencils, up to two balloons, up to eight straws, 12 inches of tape, 12inches of wire, cardboard, small weights.

2007-03-07 05:10:45 · 2 answers · asked by Anonymous

2007-03-07 04:59:07 · 2 answers · asked by Anurag j 1

Hello, an aquaitance of mine claims to have read of a project enabling two (or several?) phones to send sms's to one another in a relatively small area WITHOUT going through the operators and WITHOUT using infrared and Bluetooth...

I am asking you is that possible, or if anyone has more info, I'd be extremely grateful! Thanks in advance for your thoughts!

P.S. This is for research, not to save phone bills :)

2007-03-07 04:40:53 · 3 answers · asked by r4veren 1

Instead of overhead cables...

2007-03-07 04:33:20 · 7 answers · asked by fs 3

2007-03-07 03:53:18 · 3 answers · asked by wencar29 1

ahuhuhuhuhuhu... tomorrow I need to finish our project tomorrow waaa... its all about making a concept of a parking lot system meaning that i must make the concept of the whole system including switches, elevators, traffic lights etc... My god I am just 3rd yr COE but still i did'nt learned that much coz the instructors didn't thought us that us that much... ahuhuuhu... I just got finished with thet traffic lights system with swiches... but damn.. the concept of an elevator is damn hard to understand... 1st I had a 12v DC motor damn.... i know how to set it on its position for lifting... but theirs problems i encountered

1st is that how could a manupulated the up n downs of the elevator
by switching its poles with only one switch..

2nd when the elevator reaches the top or down how could it switch
its power to off..

3rd and finally after being off at the top how could i lock it with out letting if fall from the top.

Help me please i'm almost crazy of thinking.. thanks a lot T_T

2007-03-07 03:50:50 · 1 answers · asked by Chris 2

2007-03-07 03:49:35 · 1 answers · asked by shelbygt5001967 1

the hight is about 20m and the problem that the foundation is alluvium and sand , and not rock as usual ....

2007-03-07 03:43:35 · 1 answers · asked by MOHAMMAD A 1

jglkdjgjiieiriooooohghkjllkllk

2007-03-07 03:39:05 · 2 answers · asked by SUDHARSAN R 1

In our machine a part is specified with the material as DAC steel, but here in India the local steel suppliers are not aware of that.. they are aware only on EN-grade.. If any one know the equallent EN grade for DAC please kindly let me know

2007-03-07 03:34:40 · 1 answers · asked by mahi 2

2007-03-07 03:34:09 · 7 answers · asked by Anonymous

We know that, the moment of inertia is nothing but moment of moment, but what is the physical meaning.

2007-03-07 03:30:44 · 6 answers · asked by Swamy 1

This is basically about the working principle I am confused about this issue. Pls help.

2007-03-07 02:52:00 · 3 answers · asked by usha r 1

2007-03-07 02:46:23 · 3 answers · asked by amkrishna1957 1

the main parts are :- emitter, base collector

2007-03-07 02:44:02 · 5 answers · asked by David Junior 3

I'm about to finish an AA degree in EE and right now I'm doing Physics 2 with Calculus,I love Calculus i've gotten A's on 1 2 & 3 but Physics is very hard and I'm not really liking it. Does EE require a lot of Physics? Do you think I should cahnge my major?

2007-03-07 02:32:41 · 2 answers · asked by Teenage Dirtbag 1

2007-03-07 02:26:37 · 4 answers · asked by iemmustafa 1

2007-03-07 02:16:35 · 1 answers · asked by Anonymous

i need the weight of a full drum of 8fibre optic cable in kilos

2007-03-07 02:10:13 · 2 answers · asked by Anonymous

It is better to explain the frequency and the function of the operational amplifier..

2007-03-07 02:07:05 · 5 answers · asked by David Junior 3

2007-03-07 02:02:32 · 8 answers · asked by Anonymous

m a electronic & tele-communication enginnering student. so pls will u let me know that what will be the amount i will get if i go for pivate firm.

2007-03-07 01:53:26 · 3 answers · asked by yolen_99 1

Rough or smooth. Topic on insulator of heat.

2007-03-07 01:46:54 · 5 answers · asked by Troubled nerd 1

2007-03-07 01:46:26 · 3 answers · asked by Devil 4

if the roof is 7 m from peak to
eave and the attic space is 3 m high at the peak, how long does each of the pieces
of insulation need to be? Round to the nearest tenth.

2007-03-07 01:13:19 · 4 answers · asked by DEE L 2

pls help me, I need the formulas and some examples of modulation. I need solved problems using the modulation formulas. pls help me.!!!

2007-03-07 01:06:22 · 1 answers · asked by Anonymous