Monday, September 20, 2010

CrazyEngineers Forum

CrazyEngineers Forum


Flow control

Posted: 20 Sep 2010 01:38 PM PDT

Hello,

I am hoping to get some help if I can.

I have a class this year in Control Engineering, and we have been set a problem involving keeping a water take at a set level. We have to break the model down into it's respective parts - signal amplifier, motor, valve, and plant, or tank, and we need to work out the respective transfer functions.

During class we worked out the model and TF for everything bar the plant.

I know the plant/tank relates the input flow to the output flow via the 'level' in the tank. I know this, but I don't know how! I don't know how to work out the transfer function for the relationship between the input flow and the output flow of the tank.

Can anyone shine any light on this process?

I am not looking to be told the answer ...I want to understand it myself rather than just been told.

Thanks in advance.

Seán

Hello

Posted: 20 Sep 2010 01:24 PM PDT

Hello, my name is Seán O'Fithcheallaigh, and I am an electronics engineer ...well, a student of electronics engineering, in my last year of an Honours degree in Ireland.

When I am finished my current course, I hope to move on to a Master's or PhD.

I don't have a lot of down time, but when I do, I enjoy reading non-fiction books, and just wondering around the Internet. I also enjoy music, strangely, I love jazz, classical, experimental hip-hop and metal.

I have joined here to learn, and to, hopefully, impart information.

Thanks
Seán

Need Search Box Code

Posted: 20 Sep 2010 11:54 AM PDT

Hi CEans i am making a website and i want to add a search box in it. I got the code from google but its not working. Can anyone here tell me the code which i can use in search box to search the stuff on my website?.

want to develop a mobile locking application

Posted: 20 Sep 2010 10:03 AM PDT

Actually i want to develop an application for mobile phones which can lock any specific part of cell phone ex message contact nd etc....not for entire cell phone. please suggest me some direction guys where i should move............???????:(

Ubuntu Terminal

Posted: 20 Sep 2010 10:02 AM PDT

Share all the commands used in Ubuntu Terminal window .....
:cean::cean:

uncontrolled rectifiers

Posted: 20 Sep 2010 06:19 AM PDT

hi guys, please explain about single phase and multi phase uncontrolled rectifiers with R,RL,and back emf load

10 reasons why people quit jobs in IT industry

Posted: 20 Sep 2010 04:49 AM PDT

SiliconIndia surveyed people from the IT industry to find out top 10 reasons why people quit their job in IT industry.


1. Mismatch between the promised job and the situation on hand.
2. Limited opportunity for personal growth and skills.
3. Boss too much to handle.
4. Lack of recognition of the good work being put-in.
5. Management freezes raises and promotions.
6. Poor work culture/work ethic.
7. Inability to maintain/achieve a healthy work-life balance.


8. Lack of Feedback Mechanisms.
9. Lack of decision-making power.
10. No fun or enjoyment in job/ unchallenged.

I want to embed java applet on my blog.Need some help!!

Posted: 20 Sep 2010 04:18 AM PDT

Hello guy's,
As we know we have the facility to interprete your java script and HTML code on our blog.
Any one have idea how to embed our java applet code on the blog.
.
Suppose i created a registration form using java applet and i want to display it on my blog.Any one have idea how this can be done.

:cean::cean:

Using ADC interfaced with microcontroller

Posted: 20 Sep 2010 04:16 AM PDT

Hi

i have made an ADC using a microcontroller such that if i change the resistance the digital value changes from 0 to 255. i have interfaced this to a computer using RS 232 connection and now i see the values in hyperterminal window. now my question is how to use the digital values i see in the terminal window with a PC based application. With the help of some friends i am gonna develop an application that uses the values from 0 to 255 . How to connect these two internally

8085 microprocessors

Posted: 20 Sep 2010 03:51 AM PDT

i have a doubt that though 8085 is a 8-bit processors why do we give input as a two 4-bit values?:rolleyes:

new me!

Posted: 19 Sep 2010 10:41 PM PDT

Hello..i am new to this forums..i am here to searching trainings in bio tech

Improve your essay in a week

Posted: 19 Sep 2010 08:30 PM PDT

Easy Ways to Improve

The analytical writing section is important and different from most of the GRE test because it is *marked by a human rather than a computer*!
These human markers will be under a lot of pressure. They may have to mark 20-plus essays in an hour. So your essay doesn't have a lot of time to impress.
Two of the most vital things you MUST remember for the essay question are:
  1. WRITE LEGIBLY! The marker will NOT waste time trying to decipher impossible handwriting
  2. Read the essay prompt carefully, then KEEP ON-TOPIC! Markers are told to give off-topic essays a ZERO mark!
It is essential that you remember these two rules to avoid a disaster on your GRE essay section.
The Really Boring Essay Question

Imagine this. You've studied your vocabulary video lessons really well. You've practiced writing lots of great essays - you feel good to go!
Then you sit down in the exam and find yourself confronted with the most BORING essay prompt you could imagine. Whatever topic it is that bores you stiff, you suddenly find yourself having to write an essay on it for the next 25 minutes!
This is a real pain in the neck, but it happens often, so you must be prepared for the eventuality. To prevent this causing you a disaster on the day of your test, you should regularly practice finding and expanding a "pretend opinion" on things that you don't care a fig about. You could pretend to be someone else, and say, "People who like xxx would give the following reasons why this is a bad/good idea: .... " And so on.
The nub of the matter is that you have to be able to come up with an essay on pretty much anything, so practice writing essays as a skill, regardless of the content.
In the next lesson, we'll talk about essay templates, which will be a big help for you in these kind of situations, as well as for the essay section generally.
Essay Templates

Creating your own essay templates is a simple task and an extremely effective use of your time during GRE exam preparation. It will put you ahead of a *huge* chunk of the crowd!
Lots of students waste a bunch of time in the GRE exam essay section by trying to work out the flow of their essay. The reality is that a GRE exam essay can take a standard structure and be quickly adapted to the topic you find yourself having to write about.
An example of an essay structure might be:
  1. Introductory paragraph
  2. Supporting information #1 ...linked to...
  3. Supporting information #2 ... linked to...
  4. Supporting information #3
  5. Conclusion
Get one or more essay templates of your own together and learn them by heart. It will save you a lot of time and stress in your test!
Reading for GRE Essay Success

Reading widely and often is a key success factor for the essay portion of the GRE. As you read more and more - editorial material is particularly good for this - you will subconsciously absorb the structure of a good essay and of properly constructed English.
A good idea is to set your internet homepage to a quality news site. This will make you more likely to read quality articles and editorials on a regular basis. Do this now, not the week before your exam!
How Long Should My Essays Be?

Lots of people will tell you that your essays should be "as long as possible" and even that you should use "as many long words as possible". This isn't necessarily the best approach.
The examiners are looking for your ability to express yourself clearly and present your ideas sensibly, not for how much you can write in a short space of time.
Hopefully by now you have moved lots of the important words that we covered in the GRE Vocabulary Videos from your passive to your active vocabulary, so that you will be able to draw on them in your essay. Use them APPROPRIATELY, and write as much as you need to write to get a clearly cohesive essay down, NOT the longest essay you can produce with the most words!

So, Is Facebook Building Their Own Phone? Let's Call It fbPhone!

Posted: 19 Sep 2010 06:51 PM PDT

TechCrunch broke out news yesterday that world's most popular social network, Facebook is currently building their own phone just like Google & Apple. Today, they more or less confirmed the news. However, Facebook's PR is in denial.

It's being speculated that Facebook is writing their own mobile software and actually working with third party hardware vendors to develop the hardware for it. This is because Facebook does not own hardware manufacturing facilities.

The focus of Facebook phone will be to integrate people's social profiles with the phones very tightly so that people contacts, calendars, events, messages will all be stored on Facebook.

Even if 50% of this is true; Facebook is taking rapid steps towards becoming the information hub on the Internet, slowly replacing Google.

What's your take on Facebook phone?

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