Question

Question:-

Sinusoidal oscillations produced by oscillators may be (i) damped or (ii) undamped.​

Answer 1

Answer:

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The oscillations generated by sinusoidal oscillators may be categorized as damped and undamped oscillations. The electronic oscillations whose amplitude goes on decreasing with time due to the losses inherent in the electrical system in which oscillations are generated are called damped oscillations.

Answer 2

Answer:-

(i) Damped Oscillations

Oscillations whose amplitude keeps decreasing (or decaying) with time are called damped or decaying oscillations. The waveform of such oscillations is shown in Fig. 28.2

(a). These are produced by those oscillator circuits in which PR losses take place continuously during each oscillation withou any arrangement for compensating the same. Ultimately, the amplitude of the oscillations decays is zero when there is not enough energy to supply circuit losses. However, the frequency or time-period remains constant because it is determined by the circuit parameters

(ii)Undamped Oscillations

Oscillations whose amplitude remains constant I.e does not change with time are called undlamped oscillations. These are produced by those oscillator circuits which have no losses or if they have there is provision for compensating them. The constant-amplitude and constant frequency sinusoidal waves shown in Fig. 28.2

(b) are called carrier waves and are used in comanication miners for transmitting low-frequency andio information to far off places