An A.C sonometer is an apparatus by which the transverse vibrations of strings can be studied. It consists of The frequency is calculated using the equation. EXPERIMENT. AIM. To determine the frequency of alternating current using a sonometer E Set up for finding frequency of ac mains using a sonometer. Experiment: MELDE’S EXPERIMENT. Object: To determine frequency of A.C. mains using Sonometer. Apparatus: • A sonometer with a steel. Author: Narisar Nelkis Country: Greece Language: English (Spanish) Genre: Art Published (Last): 9 December 2016 Pages: 352 PDF File Size: 5.81 Mb ePub File Size: 19.58 Mb ISBN: 236-7-77033-252-4 Downloads: 18944 Price: Free* [*Free Regsitration Required] Uploader: JoJorr When the natural frequency of a particle is equal mainx the frequency of driving force, then resonance takes place. Why is the instrument called a sonometer? Percentage Error Same as in Experiment When an alternating current of definite frequency passes through the wire there will be interaction between the magnetic field and the ising carrying conductor.

What is the natural frequency of sonometer wire? When the vibrating tuning fork is kept on the board of the sonometer, the sonometef vibrations of the board communicate energy to the string which in turn is set into forced vibrations. To determine the frequency of a string first take a copper string and connect it to an A.

It is found that in an alternating current, the tendency of the moving electrons is to drift towards the surface of the conductor while moving along its axis. Aim To find the frequency of the A.

## Frequency Of AC Mains Using Sonometer

At this stage, the length of the wire segment is called the resonating length and it increases with increase in the mass of the suspended weights. Because it is a ferromagnetic material.

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In very high frequency A. Theory A low alternating current passed directly through sonometer wire imposes forces on it the frequency v nu of the A.

Aim To find the frequency of the AC mains with a sonometer. Every object has a natural frequency of vibration. For an alternating current having maximum peak value 70. Derivation of the equation: The frequency with which the body vibrate is, called its natural frequency. Give demerits makns of A. What are nodes and antinodes? The string wire of the sonometer is a non-magnetic metallic wire like brass or copper.

What are forced vibrations? Then adjust the knife edges or the magnet to get the maximum vibration. The graph between mass M of the suspended weights and square of the resonating length l2 by taking M along X-axis and l2 along Y-axis is drawn. A current having magnitude changing between maximum and zero and same direction, is called unidirectional current.

Therefore, a sonometer is an instrument which measures the frequency ssonometer sound. A magnet magnetised by electric current, is called an electromagnet. Weights can be added to the holder to produce tension on the wire and the bridges can be moved frequenncy change the length of the vibrating section of the string.

What is skin effect?

### AC Sonometer (Theory) : Class 12 : Physics : Amrita Online Lab

What mainss the function of holes in the sonometer box? Let a loaded stretched soft iron wire have resonant length l 1 with the electromagnet.

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Define root mean square or virtual or effective value of alternating current. When a body is vibrating with its own natural way then it has natural vibrations.

What expwriment natural vibrations? If M is the mass and L is the length of the string then. How does the wire begin to vibrate in this case? Let a tuning fork of frequency V T have resonant length l 2.

## Our Objective:

A wire string is attached to one end of the wooden box, run over the bridges and pulley and carries a weight hanger at the free end as shown in figure below. What is frequency of alternating current supplied to us in our houses? Frequency of vibration of a stretched string: For a string of a given material and length and under a constant tension, the frequency is inversely proportional to its diameter. What is function of a sounding board? To make the inside air in communication expegiment external air.

Expeiment adjusting the length of the vibrating wire segment, this frequency can be made equal to the natural frequency of the wire segment. What do you freequency by A. When a current carrying wire is placed in magnetic field then magnetic force act on the wire which tends to move it in a direction which is perpendicular to current and field.