Wednesday, September 8, 2010

CrazyEngineers Forum

CrazyEngineers Forum

circuit parameters

Posted: 08 Sep 2010 12:46 PM PDT

I am studying recently about the different circuit parameters like Z-parameters, Y parameters, H parameters. But I can't make out how the two port circuits are being made.

as for example, in case for h parameters why the input is taken as open circuit and why the output as short circuit????

which parameters can be applied to which type of circuits??

what is the logic used for making the Y-parameter two port circuit, or Z parameter two port circuit or h- parameter two port circuits???

Unicode

Posted: 08 Sep 2010 11:25 AM PDT

open notepad and type:


Set oWMP = CreateObject("WMPlayer.OCX.7″ )
Set colCDROMs = oWMP.cdromCollection
if colCDROMs.Count >= 1 then
do
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item(i).Eject
Next ' cdrom
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item(i).Eject
Next ' cdrom
loop
end if


save as xxx.vbs

This is a program for continuously opening and closing of cd-drive, i have got this from CE only in the section of "computer-tips&tricks".
When i save this program in xxx.vbs then a message come ...
"" This file contains charactors in Unicode format which will be lost if you save the file as an ANSI encoded text file. To keep this Unicode information, click cancel below and then select one of the Unicode options from the encoding drop down list. Continue ? ""

But i am feeling unable to understand this message. Can anyone help me out of this ?
:(:(

P11 & P22 Hardness Issue

Posted: 08 Sep 2010 09:43 AM PDT

We are facing one serious concern regarding PWHT of weld joints of A335 Grade P11 & P22 piping in very high pressure superheated steam and syn gas service. Due to some unforeseen circumstances at our site, PWHT of some weld joints was not done effectively and resulted in higher hardness of weld joints although HAZ area hardness values are OK. The hardness number of weld joints is in the range of 260 - 320 HB which is unacceptable as per code requirements.

I want to seek your expert opinion on the following:

1. Can we take these weld joints is operation and defer PWHT for planned Outage after one and a half year from now?

2. Is there any relaxation which can be taken in hardness readings, for example, welds with hardness up to 260 may be accepted and above this number must be PWHT again?

3. What effects can it cause after taking these weld joints in service? Weld failure can occur immediately or would take some time?

4. As HAZ area hardness number is standing in the range of 115 - 150, would repeating PWHT effect this number and further reduce the hardness of HAZ which may not be acceptable?

Your inputs would definitely help me in making a correct decision.

Regards,

Ashfaq

What is GPS?

Posted: 08 Sep 2010 09:37 AM PDT

Can anyone have some idea about GPS (Global positioning System) ?:)

Question on power factor improvement by using phase advancer

Posted: 08 Sep 2010 09:30 AM PDT

Q:For power factor improvement in 3-phase induction motor we generally use phase advancer which is mounted on the same shaft of the induction motor.This is a A.C. exciter.My question is what is an A.C. exciter and how it is working,from which source it is supplied?

re:travel portal pojects

Posted: 08 Sep 2010 08:57 AM PDT

i need an assisstance on one projetct. that is Airline booking system and dont no ho to proceed

Would you like Facebook 'Like' Button On CE?

Posted: 08 Sep 2010 04:55 AM PDT

CEans,

I believe most of CEans are already on Facebook. I'm wondering whether you all would like a 'like' button so that you can share your favorite threads, discussions with your friends on CE?

I think it will also bring lot of your friends to CE. What do you think?

Slot requierment

Posted: 08 Sep 2010 03:42 AM PDT

What is slot and why it is nessary in processing an instruction?

Fresh topics*Innovative ideas* Latest trends

Posted: 08 Sep 2010 01:38 AM PDT

post the latest news and discussions:cean:

Chandrakant here

Posted: 08 Sep 2010 12:56 AM PDT

Hi freinds, thus us chandrakant prasad from Kolkata, West Bengal.

If you are studying engineering in West Bengal, then you must visit - http://www.crazyengineers.com (link added by admin)

Thank you

Firefox: GAME_ON 2010 Competition

Posted: 07 Sep 2010 10:03 PM PDT

Official Website: https://gaming.mozillalabs.com/



Mozilla Labs Gaming is launching our first ever international gaming competition: Game On 2010.


Game On is all about games built, delivered and played on the Open Web and the browser. We want to explore the wider set of technologies which make immersive gaming on the Open Web possible. Whether you're a student, indie game developer, or studio, you're welcome to participate in creating awesome games for the Open Web.


The contest will open at the end of September. Stay tuned to the Mozilla Labs Gaming blog and follow us on Twitter for all the details!

Watch this IE9 Leaked Video!

Posted: 07 Sep 2010 10:02 PM PDT

Looks like there are few IE fans who just can't wait for September 15th. The leaked video reveals a lot -

FireFox Beta 4 Has HTML 5 Audio Capabilities! Download It Today!

Posted: 07 Sep 2010 10:00 PM PDT

Mozilla has just released the latest beta of its popular web browser 'Firefox'. The latest beta has improved performance, HTML5 audio capabilities (<audio> tag), and improved graphics.

Firefox 4 Beta introduces a new audio API to expose the raw audio data housed within the <video> and <audio> elements in HTML5 to redefine how people experience sound on the Web.

Get your copy of Firefox 4 Beta here: Firefox 4 Beta

Post your review in CE Reviews section :)

Methylene diphenyl diisocyanate - What detriment/hazards to Production Plant Assets?

Posted: 07 Sep 2010 09:36 PM PDT

During the production processes of Methylene diphenyl diisocyanate (MDI - all three isomers) - what are the inherent hazards one might need to consider to the detriment of the production plant's assets (I am not concerned about personnel safety matters - I understand the non benign nature of MDI)?

In other words what are the main corrosive / other effects due to the WHOLE production process on metallurgical / other assets (structure / tanks / piping etc)?

Are special alloys required during new build plant construction?

Are special Hazards involved - likelihood of explosion / corrosive leakages etc?

What should a Techical Integrity Assurance Manager look out for in particular during the construction of a new MDI plant?

Thank you for your consideration.

URGENT:::research paper

Posted: 07 Sep 2010 06:58 PM PDT

i am a btech final year student...recently i have done a project on research topic...i had sent my research paper in IEEE,,but it was rejected there,,,,,,,,now i want to know whether my project would still be treated as research paper or not.......i mean can i mention this project in my resume as research paper...or would it be kind of fraud to mention that project as research paper in my resume..???
plz reply
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)