CrazyEngineers Forum

Find the mathematical equation for a rotating cam and follower
Fastest helicopter in the world?
Quantitative aptitude 6
What is memory bank ?
Problem with Matlab - GA to solve Transmission planning problem
Problem in PHP
Eid Mubarak!
My First Robot... :)
Difference between Com.Sci. and Com.App.
Quantitative Aptitude 5
Word list for me (f)
Word list for me (e)
Word list for me (d)
Are Internet Webpages written in HTML?
rotary compressors

Find the mathematical equation for a rotating cam and follower

Posted: 09 Sep 2010 11:48 AM PDT

Consider the following moving cam (rotating round bit) with follower (straight rod):

The follower is of fixed length and is attached to a fixed point on the rotating cam while the other end of the follower is guided such that it is always below the center of rotation of the cam.

Solve:
1. Draw a graph for the velocity and acceleration for the x-axis as well as the y-axis for both ends of the cam follower
2. Show your formulation

Hint:
Only if requested ;)

The answer will be posted here in a week or so
Good luck!

Fastest helicopter in the world?

Posted: 09 Sep 2010 10:40 AM PDT

Hey CEans! Seems like Sikorsky has designed a prototype helicopter called X2 that can fly more than 400 kph :)

Click for article

Anyone remember watching Airwolf on TV? That was an awesome heli show.

Quantitative aptitude 6

Posted: 09 Sep 2010 10:37 AM PDT

The original price of an article was reduced by 25 percent. During a special sale the new price was decreased by 10 percent. By approximately what percent would the price now have to be increased in order to restore the price of the article to its original amount?

A) 32.5 % B) 35 % C) 48 % D) 65 % E) 67.5 %

What is memory bank ?

Posted: 09 Sep 2010 09:42 AM PDT

What is memory bank ?
please give a brief idea about this ??

:cean:

Problem with Matlab - GA to solve Transmission planning problem

Posted: 09 Sep 2010 09:33 AM PDT

Dear Sir,

I am trying to use genetic algorithms ("ga(fitness,.....)") command function to solve power transmission planning problem.

The basic steps are (a)to perform power flow calculation using MatPower=>then (b)compute related parameters used as the constraints required to be input to the ga function=>(c)starts GA...(repeats a,b&c until max. number of generation is reached)

My problem is that as the candidate solutions (number of transmission lines to be added to the transmission system) that generated by GA function each time will vary the value of some of the parameters of the constraints inside the GA function input, how can I update the parameters within the ga function but not just use the same constraints values in the whole process of GA?

Thank you if anyone can help.
Student from HK

Problem in PHP

Posted: 09 Sep 2010 09:12 AM PDT

<form action="insert.php?id=<?=$_GET['id']?>" method="POST">

can any body tell me what does it mean... i mean how the code written above works.

Eid Mubarak!

Posted: 09 Sep 2010 08:39 AM PDT

Would like to wish my fellow Muslim CEans Eid Mubarak! Hope you all enjoy this special day :)

My First Robot... :)

Posted: 09 Sep 2010 07:21 AM PDT

hey guys,

i'm here sharing the accomplishment of a long time dream,

:happy: :happy: TO BUILD A ROBOT!!! :happy: :happy:

I did it atlast, actually it was me and three more friends of mine who did it. :D :D :D

it is a manually controlled robot car that you can race around
check out the pics... will upload the video clip shortly. ;-)

i am so proud of it... :D

and i'm on the process of developing it into an autonomous one and bring in more changes
will let you know of the developments. ;-)

Difference between Com.Sci. and Com.App.

Posted: 09 Sep 2010 07:05 AM PDT

hello friends
Can anyone tell what is the difference between the computer science and computer application.
i also want to ask P.G.D.C.A. is a DEGREE? please give brief description of this question.:happy:

Quantitative Aptitude 5

Posted: 09 Sep 2010 06:29 AM PDT

A draft copy of a 100 page report must be typed by 6:00 p.m. Each page has an average of 300 words which a typist can type at the rate of 45 words per minute. If the typist works without stopping, then, of the following, which is the latest time the typing could begin if the deadline is to be met?
(A) 7:07 p.m.
(B) 5:07 a.m.
(C) 5:53 a.m.
(D) 6:53 a.m.
(E) 11:36 a.m.

Word list for me (f)

Posted: 09 Sep 2010 06:09 AM PDT

faux (adj): False
faux marble is wood painted to look like marble. A faux pas literally means false step, but is used to mean an embarrassing social mistake.

feign (v): To make a false representation of; to pretend
A feigning motion, gesture, or action is a feint, which can also be used as a verb. A boxer feints with one hand and hits his opponent with his other hand.

fetish (n): An object of obsessive reverence, attention, or interest

Word list for me (e)

Posted: 09 Sep 2010 06:00 AM PDT

edifice (n): A big, imposing building

elocution (n): The art of public speaking
A locution is a particular word or phrase. Someone who speaks well is eloquent.

electorate (n): The body of people entitled to vote in an election; the voters. The adjective is electoral.

Word list for me (d)

Posted: 09 Sep 2010 05:54 AM PDT

decree (v) : An official order, usually having the force of law
This word can also be a verb. To decree something is to declare it formally and officially.

deem (v) : To judge; to consider

defile (v) : To make filthy or foul; to desecrate

Are Internet Webpages written in HTML?

Posted: 09 Sep 2010 05:04 AM PDT

Are webpages written in HTML,So if you know only HTML,You can build a webpage,or there's more behind a webpage?

rotary compressors

Posted: 09 Sep 2010 03:08 AM PDT

i am working on a project of jet engine , i need to know about rotary compressors . and the commmercially available rotary compressor ...asap