Engineering - October 2006

what is the RF switch?

please describe me its applications and how it is working and its instrumentation.
and if some online refrence exist, introduce it, please give their address

Thank you
Best Regards

2006-10-05 19:14:23 · 3 answers · asked by mechanical engineer 2

compare CD4MCu and 2205 grade duplex steel

2006-10-05 19:10:48 · 1 answers · asked by nsnbabu 1

I'm looking for a way to cover a giant sphere with cloth. My problem is that you can't just wrap the cloth aroung the sphere...because it will wrinkle uncontrollably. How can I make the cloth lay flat? I assume it means making many separate cuts that fit together in the shape of a sphere...but I can't figure it out yet. Please help!

2006-10-05 18:13:36 · 5 answers · asked by MattMan 3

What intrigues me is how we can fashion microprocessors from stone tools. There is a progression. Stone tools led to copper tools, which led to bronze and iron and parts of increasing refinement. I don't understand how crudity can lead to sophistication. What is the missing ingredient?

2006-10-05 18:10:31 · 7 answers · asked by Gibaudrac D 2

I want to improve the lives of all humanity. What is my next step and beyond.

2006-10-05 17:51:42 · 8 answers · asked by brokolay 3

please give me some reliable website about transistors and thyristors

2006-10-05 17:42:42 · 4 answers · asked by perry 1

when i browse through various websites, i am able to get only a few lines and mostly it is about the books that are available and there is no elaborate reading material as such for ready reference

2006-10-05 16:59:42 · 3 answers · asked by POTATO 2

What is the difference between the two? I have worked as a carpenter for many years and tired of going nowhere. I was thinking about taking classes to become a civil engineering technician, but I am not sure if that is the same thing as a carpenter labor? I would hate to spend thousands of dollars to do the same job. Any information about this career field would be greatley appreciated. Thanks

2006-10-05 16:54:23 · 4 answers · asked by nhale24 1

prefer to use wood

2006-10-05 16:53:18 · 4 answers · asked by Leo W 1

How to calculate the Starting AMP of this 3 horsepower single phase motor whereby if i use D.O.L starter and Soft Starter?

2006-10-05 16:53:11 · 4 answers · asked by Mr. Logic 3

to go technical career

2006-10-05 15:33:31 · 3 answers · asked by ferragy 1

I have this hwk design and i have no idea how to do it or where to start. This teacher is hella hard, help me out.
Here it is
http://www.ecst.csuchico.edu/~btseng/eece315/315des-2.pdf

2006-10-05 15:30:19 · 4 answers · asked by Anonymous

2006-10-05 15:15:51 · 11 answers · asked by The Apostle 2

2006-10-05 14:05:56 · 7 answers · asked by The Apostle 2

What materials would be needed and how would one put it together?

2006-10-05 13:57:17 · 3 answers · asked by Bob 3

Suppose you had a spiral (not flat), propeller that draws air to itself.

It requires an engine to get it started and up to a pre-set number of

RPMs, but then the engine can be shut off. Would it be able to

overcome the force of friction and continue to run on its own? If

not, what else would prevent it from working?

2006-10-05 12:44:19 · 10 answers · asked by comedycatalyst 2

I want to "turn down" the output of a T5 bulb from 5900k down to about 5600k. This is possible I think, but I dont know how...

2006-10-05 12:30:48 · 2 answers · asked by twilightinsanity 2

When the yield stress of the web is more than the flange, so i use the smaller yield stress to calculate the sectiona capacity, or the larger one?
Im guessing the smaller to be safe.

2006-10-05 12:19:20 · 4 answers · asked by Game Theorist 2

Does anyone know where I can buy just 5 inexpensive 9 volt push type solenoids that could be used to press the shutter button on a digital camera? The shutter button is very sensitive so not a lot of pressure is needed. Radio Shack no longer carries componenets (except a few replacement ones) but no solenoids. Other places online require you to buy hundreds in bulk. They won't even give you prices on 1 to 5. I am building a helium balloon rig, an underwater rig and 3 computer control rigs for time lapse. Therefore, I will only need 5. I would prefer if they also had threaded holes for mounting.

Thanks

2006-10-05 10:57:41 · 3 answers · asked by bernie_bernoulli 2

2006-10-05 10:40:51 · 3 answers · asked by AZKZ 1

Please, who knows what's the difference between the product of q and |q| and q square? Why does it need |q|???? And I can't write down q square?? How come?
Please someone tells me!!

2006-10-05 09:45:01 · 5 answers · asked by burningcalories 2

i am keen to know anyones thoughts on the best way to wire a large generator to the consumer unit in a portacabin do i use earthing to neutral link ? and if the gennies the only supply do i use an earthing rod?
any help with portacabin genny wiring appreciated help needed
desperately.
or any help with wiring the genny to sockets or back wiring.

2006-10-05 09:21:20 · 5 answers · asked by MARTIN D 1

2006-10-05 06:51:16 · 8 answers · asked by catchup 3

i want to know my job titles in 2 seperate time frames .in both periods i was working in the main office of a construction contractor company . in the first period i performed works such as price adjustments, As - built drawings, ..etc. i was a just graduated in that period.

now 3 years has passed and in the second period which i am involved with now, i am doing works like analysing intended tenders to bid...

what could be my job titles? Its very important to me to know what were my job titles. Answer me considering the fact that in the first period and also in the second perios i am employed as a civil ENGINEER working for a contractor company.Please help me.

i know many job titles in site, like site engineer, construction engineer, construction superintendent ,but unfortunately i dont know any titles in main office of the contractor company!Help PLEASEEEEEEEE

2006-10-05 05:58:52 · 3 answers · asked by Anonymous

Gentlemen

Thanks for answering my previous question viz: can I recharge battery by charger connected to the AC supply from the inverter? I have seen from your answers that although this is possible it is not recommended

My question now is: can I recharge the battery by way of a car alternator. That is, I power a rotor, say, 100watt motor that will be coupled to a car alternator, which will then charge the battery. Actually I want to eliminate the need for grid electricity in this project.

Thanks

Harry

2006-10-05 05:25:30 · 3 answers · asked by haroldezeugwu 1

Good day everybody

i just bought an inverter. is it possible to connect a small charger to the AC generated by the inverter, and then use this charger to charge the battery connected to the inverter so that as the battery is giving power to the appliances connected to the inverter, the charger is charging the battery thus ensuring that the battery wount go down?

2006-10-05 04:22:54 · 7 answers · asked by haroldezeugwu 1

external pressure = 1 atm (101325 Pa)
material of pressure vessel = Marraging Steel (UTS = 450 N/mm2)
shape of pressure vessel = Rectangular c/s

2006-10-05 03:47:07 · 11 answers · asked by mailfortarun 1

Anybody know about this in India? if yes, who manufacture it in India?

pls advise with address or details

2006-10-05 02:51:10 · 2 answers · asked by Wowpra 2

my question is: Discriminate between the main types of employer and the roles of the construction professionals within the industry.
IN 100 WORDS

2006-10-05 02:51:03 · 3 answers · asked by PITSHOU K 1

the density should be taken into consideration. Why cant it depend on the density?

2006-10-05 02:35:28 · 3 answers · asked by aqua 1