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Analog Electronics - Engineering

Q1:

The voltage gains of an amplifier without feedback and with negative feedback respectively are 100 and 20. The percentage of negative feedback (β) would be

A 40%

B 5%

C 20%

D 80%

ANS:A - 40%

20 = 100/1 + 100 beta,

Beta = 0.04 * 100,

= 4%.