To obtain sustained oscillation in an oscillator

Oscillations

The condition to sustained oscillation is given by

In an oscillator, for sustained oscillations, Barkhausen criterion is Abeta equal to (A = voltage gain without feedback and beta = feedback factor)

The frequency of oscillation in an oscillation

A girl is in standing position in an oscillating swing. If the girl sits in the swing, the frequency of oscillation

Describe briefly the underlying principle of a transistor amplifier working as an oscillator. Hence, use the necessary circuit diagram to explain how self sustained oscillations are achieved in the oscillator.

In case of damped oscillation frequency of oscillation is