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Exam Questions Papers - Engineering

Q1:

Consider the following amplifier with negative feedback

If the closed loop gain of above amplifier is + 100, the value of β will be

A -9 x 10-3

B 9 x 10-3

C -11 x 10-3

D 11 x 10-3

ANS:A - -9 x 10-3

The T.F. 103 = 100 - 103 x 100 x β 900 = - 100000 x β ∴ β = - 9 x 10-3.