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Construction Of Meter Bridge In Our Laboratory
CHAPTER ONE -- [Total Page(s) 2]
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CHAPTER ONE
1.0INTRODUCTION
Our ability to measure a quality
determines our knowledge of that quantity, the measurement of electrical
quantities or other parameters in terms of electrical quantities is
essential to our everyday life. Hence there is need is to have a through
knowledge of electrical instrumentation and measuring systems.
Instrumentation
is the technology of measurement in all branches of sciences,
engineering and technology and are mainly use to monitor a process or
operation as well as controlling (victor, 2009). However the term
instrument in its wider sense may be categorized as indicating,
recording and controlling instruments. As it concerns the topic of our
research, indicating instrument is to be intensively considered.
Indicating instruments are those instruments which indicate the value of
the quantity that is being measured at the time at which it is
measured. Such instrument according to Theraja (2000), consist
essentially of a pointer which moves over a calibrated scale and which
is attached to a moving system pivoted in jewelled bearings. These
indicating instruments are Ammeter, voltmeter, wattmeter, galvanometer,
meter bridge etc which measures current, voltage, power, smaller values
of currents and resistances respectively.
Our interest this work is
to construct a meter bridge that will be useful in the laboratory. To
achieve this target requires a consideration and understanding of the
principle of operation of a Wheatstone bridge and a potentiometer.
In
the simplest definition, a meter bridge is simple type of potentiometer
which may be used in school science laboratories to demonstrate the
principle of resistance measurement by potentiometric means (Jan, 2013).
To
construct a meter bridge involved the selection of various components
and the connection of these parts into the workable system. These
components like galvanometer, connecting wire, meter bridge rule,
jockey, cell, key are discussed in next subsequent chapters.
This
material is thus divided into five chapters beginning with chapter one
which introduces the concept of work and ends in chapter five which
contains conclusion, recommendation and the references.
CHAPTER ONE -- [Total Page(s) 2]
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ABSRACT - [ Total Page(s): 1 ]The working of a meter bridge is based on the principle of Wheatstone bridge. It uses two resistances instead of four resistances obtainable in a Wheatstone bridge. The construction of the meter bridge was simply the selection, assembling and wiring of the components, by following the circuit diagram, into the find piece. The constructed bridge is tested and demonstrated to find the value of unknown resistance. One good thing about meter bridge is that, it is simple and more accurate than Wheats ... Continue reading---
