Question

The ability to pick up week signals by a receiver is called _________

(a) Gain

(b) Amplification

(c) Sensitivity

(d) Selectivity

I had been asked this question in examination.

My question is taken from Communication Receivers in section Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics

Answer 1

Right answer is (c) Sensitivity

Explanation: A communication receiver’s sensitivity, or ability to pick up weak signals, is mainly a function of overall gain, the factor by which an input signal is multiplied to produce the output signal. In general, the higher the gain of a receiver, the better its sensitivity.