Saturday, March 26, 2011

CrazyEngineers Forum

CrazyEngineers Forum

MS from india

Posted: 26 Mar 2011 11:07 AM PDT

Is there any good institute for MS in india after btech... Everyone prefer gre and do it from abroad..:rolleyes:

Infosys Or MS ?

Posted: 26 Mar 2011 08:35 AM PDT

Hi everyone
I m Btech ECE student graduating in 2011.
I have admit from UTA for MS computer Engg. in Fall 2011 (Gre-1100, Toefl-95)
And also I am placed in Infosys for Systems Engineer position.
Now i m really confused whether to go for MS or Job.

Help me....

file-system mounting

Posted: 26 Mar 2011 08:06 AM PDT

Please help in the interpretation of a line from GALVIN:

"A system may obscure the directory's existing files until the file system is unmounted, terminating the use of the file system and allowing access to the original files in that directory."

Does it mean that the files under the file system would still be available but the mechanism of the on-line access to the files would be lost i.e.,the file system would not be available?

Why Does My Computer Hang?

Posted: 26 Mar 2011 07:54 AM PDT

Hi All! Now, please explain to me the logic behind it.. all OS and memory stuff? why a system freezes and hangs and why sometimes all tricks fail and you have to restart ! Cant i just save my work..... :rolleyes:

dear friends can u explain me which one is more elastic steel or glass

Posted: 26 Mar 2011 07:43 AM PDT

i think due to brittleness property of glass it is less elastic. suggest me the right

Hi Everyone

Posted: 26 Mar 2011 06:40 AM PDT

I'm not an engineer and have no desire to reach any advanced level of Metallurgy, but I do work for a company that blends scrap stainless for manufacturing companies. The position I'm in really limits my ability to learn about metal chemistries. I know the basics of only the metals we deal with, but would like to gain more advanced knowledge of them and the hows and whys of what metals can be blended together to make certain types of stainless.

The easiest and probably quickest way to do this would be to go to school for Metallurgy; however, time and financial restraints limit my opportunities for schooling at the moment. I feel that if I could get my hands on some good books that I could obtain the knowledge I desire in a reasonable amount of time. As I stated earlier, I in no way wish to obtain the level of knowledge of a metallurgist. I only wish to obtain a more specific knowledge of the metals and chemistries that we work with on a regular basis; 201, 301, 316, 410, 430, 440 stainless steels. I would also like to know, some what in depth, how nickel, manganese and moly effect the blends separately. I would also like to gain knowledge on why sulfer, tin, copper, and lead contaminate stainless steel.

My main goal in the search is to find literature that will help me learn how to blend different stainless steel scrap metals to create other stainless steel metals. If anyone can help me with suggestions of any type of book that can be obtained at a local library please post.

Thanks,
Mike

Please help me out with the coding

Posted: 26 Mar 2011 06:30 AM PDT

Dear members,
I am a SE(CSE) student. I m completing a mini-project on BUS RESERVATION SYSTEM. I have ended up on a problem with the update and booking section. I have also completed with the password protection code. But the entire program starts getting problem on execution of that part. I am trying the program using file handling in c++. I have tried with most of the part but just have got these problems.
Please provide me with the necessary guidance and the logic if you can.

Code:
/*MINI PROJECT ON BUS RESERVATION SYSTEM*/

#include<conio.h>
#include<stdio.h>
#include<iostream.h>
#include<string.h>
#include<fstream.h>
#include<graphics.h>
#include<stdlib.h>
#include<dos.h>

class bus
{
int busn,s,fare,i,seat;
char driver[10],arrival[5],depart[5],to[10],date[10],pas_name[20];

fstream x,z;

public:
    void install()
    {
    clrscr();
    z.open("data.txt",ios::app);

    cout<<"\n\n\t\t\t***** BUS RESERVATION SYSTEM *****\n\n";
    cout<<"\t\t\t*******INSTALL*******\n\n";
    for(i=0;i<1;i++)
    {
    cout<<"\n\tSource:Kolhapur";
    cout<<"\n\tEnter bus no: ";
    cin>>busn;
    cout<<"\n\tEnter driver's name: ";
    cin>>driver;
    cout<<"\n\tEnter destination:";
    cin>>to;
    cout<<"\n\tEnter fares:";
    cin>>fare;
    cout<<"\n\tEnter arrival time: ";
    cin>>arrival;
    cout<<"\n\tEnter departure time: ";
    cin>>depart;
    cout<<"\n\tEnter date (dd/mm/yy):";
    cin>>date;
    z<<busn<<"\t"<<driver<<"\t"<<to<<"\t"<<fare<<"\t"<<arrival<<"\t"<<depart<<"\t"<<date<<endl;
    }
    z.close();
    getch();
    }

    void show()
    {
    int ch1;
    clrscr();
    z.open("data.txt",ios::in);
    cout<<"\n\n\t\t\t***** BUS RESERVATION SYSTEM *****\n\n";
    cout<<"\t\t\t\t***** SHOW *****\n\n1.Seatwise reservation details\n";
    cout<<"2.Bus reservation details\n\nEnter choice:";
    cin>>ch1;
    clrscr();

    switch(ch1)
    {
    case 1:
    cout<<"Enter Bus no.:";
    cin>>busn;
    cout<<"Enter seat no.:";
    cin>>seat;
    cout<<"\n\tBus no.:"<<busn;
    cout<<"\n\tDriver's name:"<<driver;
    cout<<"\n\tSeat no.:"<<seat;
    cout<<"\n\tPassenger name:"<<pas_name;
    cout<<"\n\tFrom:Kolhapur"<<"\t\t\t\t"<<"To:"<<to;
    cout<<"\n\tFare:Rs."<<fare;
    cout<<"\n\tDate:"<<date;
    cout<<"\n\tArrival time:"<<arrival<<"\t\t\t\t"<<"Departure time:"<<depart;
    break;

    case 2:
    while(z)
    {
    z>>busn>>driver>>to>>fare>>arrival>>depart>>date;
        if(z.eof()==0)
        {
        cout<<"\nBus no.:"<<busn;
        cout<<"\t\t\tDriver's name:"<<driver;
        cout<<"\nSeat no.:"<<seat;
        cout<<"\t\t\tPassenger name:"<<pas_name;
        cout<<"\nFrom:Kolhapur"<<"\t\t\t"<<"To:"<<to;
        cout<<"\nDate:"<<date;
        cout<<"\nArrival time:"<<arrival<<"\t\t"<<"Departure time:"<<depart;
        cout<<"\n\n********************************************************************************";
        }
    }
/*      for(s=0;s<32;s++)
    {
    }*/
    break;
    }
    z.close();
    getch();
    }

    void enquiry()
    {
    clrscr();
    z.open("data.txt",ios::in);
    cout<<"\n\n\t\t\t***** BUS RESERVATION SYSTEM *****\n\n";
    cout<<"\t\t\t      *****  ENQUIRY  *****\n\n";
    cout<<"\t\t\t\tSource:Kolhapur\n";
    cout<<"\n--------------------------------------------------------------------------------";
    cout<<"Bus no.\t  Dest.        Fare\t Date\t\tArr time\tDept time";
    cout<<"\n--------------------------------------------------------------------------------";

    while(z)
    {
    z>>busn>>driver>>to>>fare>>arrival>>depart>>date;
        if(z.eof()==0)
        {
        cout<<busn<<"\t  "<<to<<"  \t"<<fare<<"\t"<<date<<"\t"<<"  "<<arrival<<"\t\t"<<"  "<<depart<<endl;
        }
    }
    z.close();
    getch();
    }
};

/*void pass()
{
int i=0;
char p[6];
clrscr();

cout<<"\n\n\n\n\n\t\t\tEnter password:";
    for(i=0;i<6;i++)
    {
    p[i]=getch();
    cout<<"*";
    }
    p[i]='\0';

    if(strcmp("smokie",p)==0)
    {
    getch();
    cout<<"\n\n\n\t\t\tPassword correct";
    cout<<"\n\n\t\t\tPress Any To Continue.....";
    getch();
    }
    else
    {
    getch();
    cout<<"\n\n\n\t\t\tIncorrect password";
    getch();
    exit(0);
    }
}*/

void main()
{
clrscr();
bus b;
int w,gd=DETECT,gm,ch;
/*initgraph(&gd,&gm,"c:\\tc\\bgi");
setbkcolor(BLUE);*/

//pass();

do
{
clrscr();
cout<<"\n\n\t\t\t***** BUS RESERVATION SYSTEM *****\n\n\n\t\t\t\t-*-*-*-MENU-*-*-*-\n\n\t\t\t\t1.Install\n\t\t\t\t2.Booking\n\t\t\t\t3.Update\n\t\t\t\t4.Show\n\t\t\t\t5.Cancellation\n\t\t\t\t6.Enquiry\n\t\t\t\t7.Exit\nEnter choice:";
cin>>ch;

switch(ch)
{
    case 1: b.install();
        break;
/*    case 2: b.booking();
        break;
    case 3: b.update();
        break;*/
    case 4: b.show();
        break;
/*    case 5: b.cancel();
        break;*/
    case 6: b.enquiry();
        break;
    case 7: exit(0);
}
}while(ch!=7);
getch();
}

plz tell me about summer training in ongc related to networking for computer science

Posted: 26 Mar 2011 05:58 AM PDT

i am student of cs 3rd year, 6th sem...
i want to get training in ongc related to networking....
plz tell me about the summer training program for 4 to 6 week in ongc...
plz rply me at <snipped>

Current Mode ICs Explained - Video Lecture

Posted: 26 Mar 2011 05:56 AM PDT

Lecture focuses on focuses on switched capacitor filter and switched current networks. Watch this lecture by Prof. Radhakrishna Rao of IIT Madras electrical engineering department. Ask your questions, doubts on this topic and add your ideas to build a discussion with fellow electrical and electronics engineers.

Phase Locked Loop Lectures 1-4

Posted: 26 Mar 2011 05:53 AM PDT

Following lectures focus on phase locked loops. Lecture by Prof. Radhakrisnha Rao of electrical engineering IIT Madras.

Lecture -I



Lecture - II



Lecture - III



Lecture - IV

Self Tuned Filter Explained - Video Lecture

Posted: 26 Mar 2011 05:45 AM PDT

This lecture focuses on Self Tuned Explained & innovative ways of designing multipliers. Lecture by Dr. Radhakrishna Rao of IIT Madras Electrical Department. Ask your questions, doubts to fellow electrical & electronics engineers and feel free to add your own ideas.

Voltage Controlled Oscillator Explained - Video Lecture

Posted: 26 Mar 2011 05:36 AM PDT

This lecture focuses on aspects of phase detectors and other types of multipliers. Lecture by Prof. Radhakrishna Rao of IIT Madras Electrical Engineering Department. Ask your doubts, questions and ideas in this thread and discuss the topic with fellow electrical & electronics engineers.

Lecture - I



Lecture - II

Analog Multipliers Explained - Video Lecture

Posted: 26 Mar 2011 05:33 AM PDT

This lecture focuses on the most important signal processing block—the multiplier. Lecture delivered by Prof. Radhakrishna Rao of IIT Madras Electrical Engineering Department. Watch this lecture, ask your doubts and questions and feel free to add your ideas on this topic in this discussion thread. Build discussion with fellow electrical & electronics engineers.

CONDENSER – AIR EXTRACTION EQUIPMENT ( 1 Of 3 )

Posted: 26 Mar 2011 05:31 AM PDT

CONDENSER – AIR EXTRACTION EQUIPMENT




- Turbines are designed for a particular operating conditions like steam inlet pressure, steam inlet temperature and turbine exhaust pressure/ exhaust vacuum, which affects the performance of the turbines in a significant way. Variations in these parameters affect the steam consumption in the turbines and also the turbine efficiency. Theoretical turbine efficiency is calculated as work done by the turbine to the heat supplied to generate the steam.


- Higher exhaust pressure/ lower vacuum, increases the steam consumption in the turbine, keeping all other operating parameters constant. Exhaust pressure lower than the specified will reduce the steam consumption and improves the turbine efficiency. Similarly exhaust vacuum lower than the specified, will lower the turbine efficiency and reduces the steam consumption.


- The air extraction equipment must be capable of meeting two conditions; one met during normal operation, the other when raising vacuum on the turbo-generator unit.


- When raising vacuum the air extraction equipment must deal rapidly with a large quantity of air and sufficient capacity must be installed to reduce pressure quickly in the condenser to a level which allows the turbine to be started. The last row blades of a 500 MW turbine will overheat if they run at speed and at low load in a poor vacuum. Thus, a vacuum of 20 in.Hg must be obtained before steam is admitted to the turbine and a vacuum of 26 in.Hg for full speed. It is important that the time taken to bring a turbo-generator on load shall not be increased by sufficient air extraction capacity.


- Under normal operating conditions the quantity of air to be exhausted is lower. It consists of air leakage into the condenser via flanges and glands and also of incondensable gases that are present in the steam exhausting from the turbine. Air and incondensable must be removed from the condenser as their presence in any quantity impairs the heat transfer capability of the condenser and hence its performance. Conversely, excessive air extraction capacity should not be run, as this involves unnecessary running costs and also results in the extraction of an unwanted quantity of water vapor from the condenser steam space.






"We will talk about the equipment for the extraction in the 2 upcoming articles"

Audio Power Amplifier and Norton's Amplifier Explained - Video Lecture

Posted: 26 Mar 2011 05:28 AM PDT

This lecture focuses on Audio Power Amplifier and Norton's Amplifier . Delivered by Prof. Radhakrishna Rao (Electrical Engineering Department, IIT Madras). Exchange your ideas, ask questions and doubts on these topics in this discussion thread and discuss it with fellow electrical & electronics engineers.
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