Exam Questions Paper - ECE Questions and Answers

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Input and output impedance with feedback for voltage series feedback having A = -200, R₁ = 10 kΩ, R₀ = 50 kΩ and feedback factor β = -0.2 will be

410 kΩ, 2050 kΩ

410 kΩ, 1.219 kΩ

≈ 0.243 kΩ, 2050 kΩ

≈ 0.24 kΩ, 1.219 kΩ

Answer : Option B

Explanation :

In voltage series feedback output impedance decreases, input impedance increases,