Question

Draw a block diagram of a generalized communication system.

Answer 1

- Hint: Find the constituent instruments or material for a communication to be possible. Make a diagram by finding them in serial order. Define the work of each component in the diagram which can make it possible to form a suitable communication system.

Complete step-by-step solution -

The communication system is a group of instruments working together to transfer information from a sender to a receiver.
In the figure we have a block diagram of a generalized communication system. In general, we have a transmitter of the signal, one channel through which the signal is transmitted and one receiver which received the signal. We have other components also to make the communication process suitable.
From the information source the information is converted into electrical form suitable for transmission called the signal.
The transmitter processes the incoming message signal to make it suitable for transmission through the channel.
Noise can be defined as the unwanted signal that tends to disturb the original signal coming from the transmitter. The source of noise can be inside or outside the system.
The receiver obtains the desired message or information from the received signal at the channel output.
We use a transducer in the communication system which can convert any form of energy into electrical energy or signal.

Note: There are two modes of communication – one is point to point communication and the other is broadcast communication.
In a point to point communication system we have only one transmitter and one receiver. But in the broadcast communication system we have one transmitter but more than one receiver for that transmitter.