Saturday, April 23, 2011

vazhga valamudan: எள்

VAZHGA VAIYAGAM VAZHGA VALAMUDAN
Jarugu is not a name of a person, not a name of a family , not a name of a street, but It is the Name of a village in which everyone have learned Vethathiri Maharishi's Yoga programs. now they are all enjoying the peaceful life watch about this in

PART ONE

http://www.youtube.com/watch?v=SIwzJcxAxoU
PART TOW

http://www.youtube.com/watch?v=T_2tq8h_5JM



Vethathiri Magarishi expected the same from all of us
His wants this to be adopted in our education system therefore the complete(Almost ) information about spiritual concepts are framed as university syllabus and now available as Part time Degree and Diploma programs (Weekend classes) all over Tamil Nadu for details check your nearest center in
http://vethathiri.edu.in/contactus/city.aspx?stateid=Tamil%20Nadu

Forward this mails to your nears and dears
by
Arulnidhi S.Rajendiran

Sunday, July 25, 2010

CALIBRATION OF AMMETER ANDVOLTMETER USING DC POTENTIOMETER..

out of ten statement three are wrong


1.The potentiometer is extensively used for the calibration of ammeters and voltmeters.
2.The potentiometers has become the standard for the calibration of ammeters and voltmeters.
3.The determination of voltage by a potentiometer is dependent of the source resistance.(independent)
4.Potentiometers can be used only for measuring voltage(voltage,current,power and resistance)
5.Any change in the supply voltage will cause a corresponding change in the voltmeter calibration.
6.For accuracy of measurement,it is necessary to measure voltages near maximum range of the potentiometer, as for as possible.
7.The dc potentiometer can calibrate any dc or ac instruments.(only dc instruments)..
8.The potentiometer measures the true value of voltage.
9.The voltage across the standard resistor is measured with the help of potentiomete and the current through the standard resistance can be computed using
I=Vs/S
10.This method of calibrating ammeter is very accurate.

by

Padmapriya and CO.

III- Year _EIE/PEC.


Answers
The statements no 3,4 and 7 are wrong

Tuesday, July 13, 2010

Teaching Methods

Dear Friends,
Well and wish to hear the same.
How many of you saw the Hindi movie Named "3 Idiot" It is very interesting and i have learned that the students participation is required in each class.
i am trying to do so. I am Happy with your interaction in the class
How many of u are really comfortable in my class and my teaching methods ?
I feel that the still my method of teaching is so conventional.
so suggest me something to have a new way of learning apart from use of LCD projector for PPT.
Those who are not watched the movie kindly watch once
bye

Monday, June 28, 2010

class 1

Introduction

you and me

Introduction to the Subject

UEI 5073 ANALOG AND DIGITAL INSTRUMENTS


UNIT – I

Electronic analog meters: DC and AC Voltmeters – true R.M.S Voltmeters – differential Voltmeters – ac Current Measurements Multimeters – Component measuring instruments – Q-meter – Vector Impedance Meter – Wave Analyzer – Harmonic distortion analyzer – spectrum analyzer.


UNIT – II

Digital Instruments: Digital methods of measuring frequency, Phase difference, time period. DVM Dual slope, Ramp type Digital Multimeters and Q-meters – Digital measurement of non electrical variables like displacement, speed and temperature. Digital storage Oscilloscope.


UNIT – III

Display devices and Recording Instruments: LED’s, LCD’s annunciators, numerics, alphanumerics, graphics – X-t and X-y recorders – UV recorders – Magnetic tape recorders – direct, F.M. digital. Interference and Screening Components impurities and their effect on signals – Electromagnetic Interference – Multiple Earth and Earth loops.


UNIT – IV

Oscillators: RC Phase shift oscillator – Wien Bridge oscillator – pulse and square wave Generators – Function Generators – Cathode Ray Oscilloscope – Vertical, Horizontal amplifiers – time base – Synchronization –free run auto – single sweep – Multitrace display – alternate chop sweep trigger sources – delayed sweep – delay lines – probes – high frequency considerations sampling oscilloscope.


UNIT – V

Introduction to Automated Measurement Systems: IEEE 488 bus – Intelligent Instruments – Microprocessor based – DVM – and Multimeters with self Diagnostic features – design of GPIB Systems. Network Protocols – OSI Model – BISYNC – HDLC – SDLC – LAN Topologies – Ethernet.



Text Books:

  1. W. D. Cooper and A.D. Helfrick, “Electronic Instrumentation and Measurement Techniques”, 3rd Edition, PHI, 1901.

  2. A.K. Sawhney, “A Course in Electrical and Electronic Measurements and Instruments”, Dhanpat Rai and Sons, 1991.


Reference:

  1. B.M. Oliver and J.M. Cage, Electronic Measurements and Instruments McGraw Hill, 1977.