Question

The action of impressing intelligence upon a transmission medium is referred to as
A. Modulating
B. Demodulating
C. Heterodyning
D. Wave generating

Answer 1

In order to solve this question, we will first discuss the definition of each term mentioned in the given four options and then will figure out which option is correct according to the given statement of question.

Complete answer:
Considering option (A) Modulating. In electronics and communication, modulation is a way of changing one or more properties of a periodic wave which is known as a carrier signal and is modulated with another transmitting wave through which information is to be transmitted. Modulating is a way of impressing intelligence or any information upon a transmission medium. So option (A) is the correct option.

Considering other options: Demodulating is the process of removing the information or intelligence which was modulated on waves, so Demodulating is just the opposite of Modulating. Heterodyning is the process of mixing the weak signals with strong sinusoidal carrier waves in order to transmit such weak signals. Wave generating refers to producing periodic waveforms such as periodic varying voltages wave, or current waves or any electromagnetic fields.So, we see that The action of impressing intelligence upon a transmission medium is referred to as Modulating.

Hence, the correct option is A.

Note: It should be remembered that the process of modulation in electronics and communication engineering is necessary because on modulation we change frequency of waves to transmit and it prevents interference and it can be sent by direct transmission up to longer distances which is a major advantage of modulation.