Question

What should be the gain of an amplifier to have zero voltage loss if the signal is already attenuated half that of the original signal?

(a) 1/2

(b) 1

(c) 2

(d) 0

This question was posed to me in homework.

The origin of the question is Gain, Attenuation & Decibels topic in chapter Fundamentals of Electronics of Avionics

Answer 1

The correct option is (c) 2

Best explanation: For the signal to have zero voltage loss gain of the attenuator, amplifier combination must be 1. Attenuation x gain =1. Gain = 1/attenuation = 1/(0.5) = 2.