I am looking for how to make a working model of transformer class 12th ?
pleae tell meabout how to make a working model of transformer class 12th
requirements ....etc

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detecting internal FAUlTS IN A TRANSFORMER WINDING
Presented by
RAKHI.M.S
EEE
College Of Engineering, Trivandrum
2007-11 batch



CONTENTS
Objectives
Introduction
Causes and Effects
Existing methods
Ratiometer method
Advantages and Limitations
Conclusion
Reference

OBJECTIVES

To detect the internal faults in a transformer winding
Detection of faults to take corrective measures to prevent interruption during operations
To improve the life expectancy of the trans ....etc

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I want the readings of sonometer experiment ....etc

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request you to give the material for hollow prism experiment
thanks ....etc

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Please give the the solution regarding pentagon(Polygon) connection for multiwinding transformer ....etc

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I need the readings of 12th sonometer experiment to write. Please provide me. ....etc

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i want to make a working project showing bthe working of transformer...hlp me ....etc

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Chapter 1
INTRODUCTION
Twelve to fifteen percentages of transformer failures are caused by winding deformations provoked by the high electrodynamics forces appearing during short circuits. These geometric vibrations lead to an increase of the winding vibration and, consequently, to an increase of the solid insulation mechanical fatigue. In this way, the isolation can be degraded and short circuit between turns will appear. On the other hand the change in the distance among the conductor implies a change in the serie ....etc

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ABSTRACT

This paper describes in detail, field experiments performed on a single-phase, distribution transformer to study the behavior of transformer terminal parameters during internal winding faults. A custom-built transformer provided with external taps was used for these tests. The taps were used to stage various internal winding faults in the transformer. Terminal values of voltages and currents were monitored and the results presented. A comparison of these results with simulation results is also presented


Presented By:
Palm ....etc

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AIM:
To investigate the dependence of the angle of deviation, on the angle of incidence, using a hollow prism filled, one by one, with different transparent fluids.

APPARATUS REQUIRED:
A hollow glass prism;
Drawing board;
White sheets;
Drawing pins;
Pins;
A sharp pencil;
Glycerine; &
Water.


RESULT:
The graphs for both the liquids are similar.
(For water) = ................
(For glycerine) = ................
The minimum deviation
for glycerine is greater than that for water.
....etc

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