AC Generator working principle in tamil

Описание: (Sinusoidal Voltage)
A.C voltage or alternating voltage changes its polarity periodically and also changes its magnitude at every instant.

A.C Current:
(Sinusoidal current) An alternating current is a current which reverses its direction periodically and changes its magnitude at every instant.

Alternator:
An alternating current generator is called alternator. It works on the principle of electromagnetic induction.
An alternator is also called as AC Generator or synchronous generator. Working principle of alternator:

An alternator works on the principle of faraday’s law of electromagnetic induction. It states that when there is a relative motion between magnetic field and a conductor an e.m.f is induced in the conductor.
Alternating voltages / current may be generated by two ways:

1.By rotating a coil in a magnetic field.
2.By rotating a magnetic field within a stationary coil.

The quantity of voltages / current generated depends upon:

*The number of turns in the coil.

*Strength of the magnetic field The speed at which the coil of magnetic fields rotates.

*It is seen that the induced E.M.F. varies as sine function of the time angle t.

*This curve is known as sine wave and the E.M.F which varies in this manner is known as sinusoidal E.M.F. e = Em sinwt

Where,
e = Instantaneous voltage
Em = Maximum voltage
t = Angular velocity of the coil.

The induced sinusoidal voltages produce sinusoidal current.

These values are Im sinwt.
i = Im Sin wt
Where,
Im = Maximum value of alternating current.

Thank You for watching