ETO ETO Exam papers 📅 Jan 2023

Exam Question

What are the conditions for producing sustained oscillations? Classify oscillations with respect to frequency range, principle involved, etc. It is possible to produce oscillations with RC networks in phase shift oscillator. Discuss in detail. (16)

Reference Answer

Conditions for Sustained Oscillations:
To produce sustained oscillations in a typical tank circuit , the following conditions must be met:
Energy Compensation: The amount of energy supplied must compensate for the losses in the tank circuit and match the energy drawn by the load.
Frequency Match: The applied energy should be of the same frequency as that of the natural oscillations in the tank circuit.

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