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An RC oscillator uses

/ Analog Electronics, Electronics And Communication Engineering / By
Question: An RC oscillator uses
[A].

one RC combination

[B].

two RC combinations

[C].

at least three RC combinations

[D].

either (a) or (b)

Answer: Option C

Explanation:

One RC combination can give a phase shift of less them 90°. Therefore 3 RC combinations are required for 180° phase shift.