Tuesday, January 11, 2011

CrazyEngineers Forum

CrazyEngineers Forum

Generator Temperature Rise Test

Posted: 11 Jan 2011 01:55 PM PST

Generator Temperature Rise Test


From a few days, we have made a test on the Generator's windings (Stator and Rotor), this test accomplish the temperature rise of the windings at full load is within the Normal range.
First, we increased the load to full load (350 MW), then increased the reactive power and the terminal voltage at about (19.7 KV).


1) Procedure for stator winding.
-Apply the following formulae, after you collect the data every 30 minutes.


Ts = ( Tst – Ts1 ) * ( In / Ib )2 + Ts1


Tst = Actual stator winding temp. – Avg. cold gas temp
Ts1= Factory test value = 4.4
In = Factory test value = 13.37
Ib = Max. Current value






2) Procedure for rotor winding.
-Apply the following formulae, after you collect the data every 30 minutes.


Tf = Tft * ( Ifn / Ift )2


Tft = Actual rotor winding temp. – Avg. cold gas temp
Ifn = Factory test value = 2945
Ift = Actual Current value




Ts and Tf , should be at the normal levels , at full load

How web browser manages tabs ?

Posted: 11 Jan 2011 10:12 AM PST

Guys,
I wanna ask when we send request for google.com in 4th tab, then why does it always open in 4th tab ?
How does a browser manage this ?
How a browser ensures the request for a page in nth tab always go to nth tab ?

Is there some kind of identifier for each tab ?

Verizon iPhone 4 Launch On 10 February

Posted: 11 Jan 2011 09:12 AM PST

iPhone4 is finally coming to Verizon. Verizon CEO Lowell Mcadam confirmed that a CDMA (non-LTE) version of the iPhone 4 will be launched on their network on February 10, 2011. Current Verizon customers will be able to pre-order on Feburary 3rd for the standard $200 price for the 16GB model on a two year agreement, $300 for the 32GB version. Others can order on February 10th.

Note: The phone is Verizon 3G (EV-DO) only, no 4G data or GSM roaming. There are no special features on this phone and it's same as your regular iPhone4 on their network.

Good news for all Verizon customers!

Spread The Love: Like Us On Facebook

Posted: 11 Jan 2011 09:02 AM PST

CEans,

We've added CE Official Fan Page and you can help us spread the love for CE among your friends with a click of a button.

Just head over to our front page and scroll down. You'll see Facebook Box in the middle column. Hit 'Like' button :happy:

Your friends will immediately come to know about CrazyEngineers.

Marshall Aerospace Selects Epicor® for Business Transformation Project

Posted: 11 Jan 2011 08:34 AM PST

Epicor Assessed as the "Most Modern and Flexible" ERP System to Meet Their Needs

IRVINE, Calif. and LONDON - January 11, 2011 - Epicor Software Corporation (NASDAQ: EPIC), a leading provider of enterprise business software solutions for the midmarket and divisions of Global 1000 companies, has today announced that Marshall Aerospace, one of the largest UK aircraft maintenance, engineering and operations companies, whose customers include the world's most respected names in commercial and military aviation, has selected the Epicor 9 next-generation enterprise resource planning (ERP) solution to underpin its business as part of a multi-phase change management project to transform the organisation's core business processes.

With an annual turnover of over £250m, nearly 1,800 staff and over 80 years of experience in the aviation engineering and support industry, Marshall Aerospace has built an enviable reputation as one of the world's premier suppliers of commercial and military aircraft maintenance and customisations. The company also owns and runs the UK's largest private airfield, at its 325 Hectare headquarters in Cambridge.

Epicor will replace a ten-year-old finance system, as well as many functions of an internally developed system, Tandem, which evolved over the last 20 years. A core team of seven business managers from across Marshall Aerospace will work full time on the project along with two IT consultants. Epicor will take over all human resource functions, purchasing, inventory, warehousing, sales processing, project management, and enable process enforcement across the business. Within the Aerostructures and Systems division, Epicor will also be providing full manufacturing functionality to enable the production and management of medium volume manufacturing runs, something this division has not had before.

"This is a huge business transformation project for Marshall Aerospace, that will not only unify our systems and processes across the organisation, but provide an ERP platform to support our long-term strategic goals in line with our 'Horizon 2020' company growth strategy," said Alan Paul, head of ICT and security. "We're looking at all our processes and questioning how we can make them better. We'll be using Epicor to provide us with greater efficiencies and enforce the new processes we put in place. One of the key things we want to do is remove the islands of automation that exist and control our workflows across departments within a single solution wherever we can."

Marshall Aerospace's bespoke system, Tandem, will not be retired in phase one of the project as there are some specialised tasks, such as hangar scheduling, that will be reviewed in later phases. There will be a number of real-time interactions between Epicor and Tandem that are made possible by Epicor Service Connect, which, through workflows designed in a visual interface, is able to control the flow of information with absolute integrity between the two systems.

"Tandem has served us very well, but our existing finance solution has reached the end of its natural life," continued Paul. "One of the biggest challenges the IT team face, is that it has become increasingly difficult to introduce modern concepts into the system. Whenever there is a process, HR, or mandatory change this has to be manually programmed into the system. Epicor will allow us to remove that cumbersome step, improving processes in the IT department and the wider company."

Using Epicor's Business Process Management (BPM) features and Epicor Service Connect will allow Marshall Aerospace to separate its business logic from the underlying code. Whenever business rules and processes are revised these can be implemented without the need for outside consultants or programming. The visual interfaces within Epicor will enable the IT team to quickly implement these changes, while ensuring that any updates applied to the system will not break the workflows that have been put in place. Epicor comes with a number of best practice BPMs that have been refined for specific industries through thousands of implementations. Marshall Aerospace will be using these best practice elements where business efficiencies can be gained, and building BPMs and workflows for the new processes defined by the business transformation project.

Marshall Aerospace will also use Epicor to enforce project lifecycle management and moving the business to a position where all work is based around the concept of a project, rather than discrete sales orders. Marshall Aerospace's current process for sales orders is very complex, involving hundreds of line items. Tracking sales orders from estimate through to completion is difficult, particularly how an order performed against the original estimate. Moving to a project-based ERP solution will introduce Work Breakdown Structures (WBS) where it will be clear how individual project elements are progressing in terms of completion and cost. This information can be used in future bids to improve accuracy, and inform where manufacturing or business processes may need to be reviewed.

"Epicor was by far the most modern and flexible of the ERP systems that we reviewed. It has clearly been re-architected as a modern ERP system, not simply given a new skin, which was our suspicion of others," concluded Paul. "We were also impressed with the Microsoft Office integration features which allow our staff to work outside Epicor, in applications such as Outlook and carry out actions on workflow items. We found many of the other vendors to be quite dogmatic, whereas Epicor understood this was a business transformation project that would require flexibility from everyone to succeed."

"We are thrilled that Marshall Aerospace has selected Epicor for this project, particularly given our wide ranging experience in the aerospace and defence industry," said Matt Muldoon, vice president for product marketing at Epicor. "Epicor's solution gives comprehensive features to meet strict product guidelines, compliance processes and quality assurance throughout the design and production phases of projects. Wherever needed, the solution has been engineered to meet the exactly requirements of this industry including project management, customer relationship management, and supply chain management."

How To Give Feedback

Posted: 11 Jan 2011 05:42 AM PST

Feedback we receive from CEans is very important in driving the CE community forward, planning new activities and making decisions that affect all of us. However, there are few points we'd like you to keep in mind while providing feedback -

  • Share what you like about the subject and why you liked.
  • Share what you did not like and provide reasons.
  • Suggest improvements and say what you think would be a better decision
  • Quote examples or provide useful links
  • Be informed that it may not be possible to incorporate everything that you suggested.
Your feedback is used in making CE better which in turn benefits you. I hope to see better feedback from our CEans for all our feedback requests.

Please give me your feedback

Posted: 11 Jan 2011 05:06 AM PST

I request all crazy engineers to Please visit my website

A1Tolet.com-Now Enjoy Free Advertisement of your PG,FLAT,BUNGALOW,Search For PG,FLAT,BUNGALOW,HOME.TOLET

and give me your feedback because tomorrow is my project presentation and i want to show feed back of engineers all over the world in my ppt to my teachers.

Please guys I have only 1 day

I need it urgently

Note Admin Please pardon me if you think i am advertising my website

Seminar Topic: CDN aka Content Delivery Network

Posted: 11 Jan 2011 04:41 AM PST

Optimizing CrazyEngineers servers led me to discovery of things I wasn't aware of, rather, never paid much attention to their usefulness. One such thing is the "Content Delivery Network".

I believe CDN could be a nice topic for your third or final year presentation or seminar. Let me introduce CDN briefly and if anyone needs more information, we can discuss the topic.

Imaging you need that "engineering drawing" book immediately. You have 5 friends who you know have the book with them. Since you're in a hurry, who'll you choose to borrow the book from? Obviously the one who's nearest to you.

For record's sake, CrazyEngineers servers are hosted in the USA. What if a user logs in from Malaysia? Our web server will have to server HTML, Images, JavaScript from our USA server. This will take lot of time. How if we could determine the user's location and serve these files from the nearest server, say a server located in Malaysia itself?

That's what the CDNs do. Content Delivery Networks copy your static data files and duplicate them on their networks located in all parts of the world. Depending up the request, the CDN computes the nearest server and serves the static files from there.

I have given you a very brief idea of the CDN. Now do your research. If you have questions, we're here to help.

Facebook Like Box on Forum Sidebar

Posted: 11 Jan 2011 03:43 AM PST

By now, most of you must have noticed the Facebook Like Box on the forum sidebar.

Don't forget to hit the 'like' button. :cean:

Questions Regarding Motor Torque

Posted: 11 Jan 2011 03:35 AM PST

Hello Engineers.

I just need to know if it si true that the higher we get above the sea, the less TORQUE we get from a motor.
I may need this info for generators.

[TUT][ROBOWARS]Combat Robot Types

Posted: 11 Jan 2011 02:25 AM PST

Quote:
Credits :: Marco Antonio Meggiolaro
Head of the RioBotz team from PUC-Rio University
Hi friends...!!! A lot of you must be knowing about Robowars competitions
being organized in almost all the techfests.


For those who are still unaware....Robowars is the simplest competition where a bot
takes on another bot.The objective is to destroy the other one......
just like a wrestling match........!!!!!!!

Here I am just showing you some basic bot types which are
generally used in such competitions......




P.S. :But it should not stop you from thinking out of the box & coming
up with ur own design & creativity.....
-------------------------------------------------------------------------------------------
There are several types of combat robots .None of them is the best. It is a rock-paper-scissors game. Or, as combat builders say, a wedge-spinner-hammer game.



The wedges tend to flip over the spinners,which in turn tend to cut off hammers,which tend to puncture or damage the wedges.But they only tend to......



The truth is that a well designed robot can win against a robot of any type, independently of the trends.



In the figure below there is a diagram showing such trends for several types of robots.
In the figure, each robot has a tendency to win against the one it is pointing to. But a good design and a good driver can completely change this.

Doubt in pointing a variable in c.

Posted: 11 Jan 2011 02:11 AM PST

hello friend's,
Check these codes...
Code:
#include<stdio.h>
void main()
{
    int *x,p=4;
    x=&p;
    printf("%d",*x);
}
and the 2nd one goes here...
Code:
#include<stdio.h>
void main()
{
    char c[]="mohit kumar singh";
    char *str;
    str=&c;
    printf("%s",*str);
}
from the first program i got the output "4".
But don't know why 2nd one will show an Segmentation fault.
Can anyone tell me the reason for this Segmentation fault...?

WORLDCOMP'11 - The 2011 World Congress

Posted: 11 Jan 2011 01:40 AM PST

WORLDCOMP'11 - The 2011 World Congress in Computer Science, Computer Engineering, and Applied Computing

Important Dates:

 January, 16, 2011
Proposals for organizing sessions/workshops

March 10, 2011
Submission of draft papers for review

April 03, 2011
Notification of acceptance

April 24, 2011
Final Camera-ready papers + Copyright/Consent + Registration

July 18-21, 2011
The WORLDCOMP'11
22 joint conferences

WORLDCOMP 2011 will be composed of research presentations, keynote lectures, invited presentations, tutorials, panel discussions, and poster presentations. In recent past, keynote/tutorial/panel speakers have included: Prof. David A. Patterson (pioneer/architecture, U. of California, Berkeley), Dr. K. Eric Drexler (known as Father of Nanotechnology), Prof. John H. Holland (known as Father of Genetic Algorithms; U. of Michigan), Prof. Ian Foster (known as Father of Grid Computing; U. of Chicago & ANL) and many other distinguished speakers.

To know more, visit: WORLDCOMP'11 - The 2011 World Congress in Computer Science, Computer Engineering, and Applied Computing &mdash; WORLDCOMP11

The Great Mind Challenge (TGMC) - By IBM

Posted: 11 Jan 2011 01:26 AM PST

The Great Mind Challenge i.e. TGMC is listed in the Limca Book of Records as the largest technological contest for engineering students.
The Great Mind Challenge (TGMC) is India's largest technology contest, open to current full-time students in Indian colleges and universities.

Below are the important dates to be remembered:
-Software Requirement Specification (SRS) Submission: 31 Dec 2010
-Project Submission: 28 Feb 2011
-Project Evaluation, First Round Results: 31 Mar 2011
-Face-to-Face Evaluations: 20-30 Apr 2011

Here is the link to it's official announcement: https://www.ibm.com/developerworks/m...5-7937fb3c73c0

Is anyone participating?

android based apps for expense tracking

Posted: 10 Jan 2011 11:13 PM PST

we have many expense tracking applications for laptops, I tried using one, but after few days i could not recollect all the minor expenses to update, thus showing incorrect details in the balance sheets. it would be great if we have mobile phone apps to track expenses. that would help us to log expense as and when we spend.

is anyone aware of such apps for android phone??
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