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Basic Op-Amp Circuits - Technical MCQs

Q1:

Initially, the closed-loop gain (Acl) of a Wien-bridge oscillator should be

A Acl < 3

B Acl > 3

C 0

D Acl approxequalto.gif 1

ANS:B - Acl > 3

1 + Rf/R = 3 but initially it is greater than 3.