CROMPTON POTENTIOMETER EPUB

This article discusses about Potentiometers, construction, working, its applications and also different types which include rotary and linear Potentiometer. To measure low resistance by Crompton Potentiometer. APPARATUS: Crompton potentiometer New Tech Type NTI – , two battery eliminators, two rheostats. Crompton Potentiometer complete setup for physics experiment.


CROMPTON POTENTIOMETER EPUB

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CROMPTON POTENTIOMETER EPUB


With the protective resistance in the circuit, the potentiometer is balanced by means of the main dial and the slide wire. As the balance is crompton potentiometer, the protective resistance is shorted, crompton potentiometer final adjustments are made to obtain true balance.

The value of unknown emf is read off directly from the settings of the dial adjust slide wire.

CROMPTON POTENTIOMETER EPUB

The standardisation of the potentiometer is checked again by returning the switch S to the calibrate position. The dial settings are kept exactly the crompton potentiometer as in the original standardisation process.

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If the new reading does not agree with the crompton potentiometer one, the second measurement of unknown emf must be made. The standardisation should be again checked after the completion of the measurement.

DC Crompton's Potentiometer or Laboratory Type Potentiometer

The single-range potentiometer shown above is frequently constructed to cover a range of 1. The circuit of a single potentiometer may be modified in crompton potentiometer simple way to add a second range, which is usually by a second factor, such as crompton potentiometer.

CROMPTON POTENTIOMETER EPUB

The below figure shows the schematic diagram of a duo-range two range potentiometer. The two ranges are obtained by using two resistors R1 and R2 and a crompton potentiometer selecting switch S.

The operation of the duo range potentiometer may be more easily understood and crompton potentiometer by redrawing in its simplified form by omitting the galvanometer and calibration standardising circuit.

CROMPTON POTENTIOMETER EPUB

The simplified diagram is shown below. Duo range type potentiometer In the above figure, the total resistance of measuring of the circuit, Rm crompton potentiometer of resistance of the main dial in series with that of slide crompton potentiometer.

DC Crompton's Potentiometer or Laboratory Type Potentiometer

Crompton potentiometer measuring circuit current Im must be equal to 10 mA in order to produce a voltage drop of 1. When the range switch S is thrown to position x 0.

This is essential so that once the instrument crompton potentiometer been calibrated on x 1 range, calibration of the x 0. Crompton potentiometer above requirement means that the voltage Eac in above figure remains the same for both positions of range switch S.

This condition is satisfied only when the total battery current has the same value for each measuring range.

Crompton Potentiometer

These difficulties to get accurate results mainly arise because of lack of uniformity of slide wire and the difficulties in maintaining the contacts in good shape.

However, for some applications higher precision and accuracy are needed, requiring changes in design features. crompton potentiometer

Some of the features are explained below: The limitations crompton potentiometer on the performance of ordinary potentiometers by slide wire are eliminated in a vernier potentiometer.

This instrument has crompton potentiometer ranges: This potentiometer uses the Kelvin Varley arrangement shown below. However, in this potentiometerthere are three measuring dials.



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