Which of the following are basic functions that a receiver must perform?

The basic functions that a receiver must perform include reception, detection, selection, and reproduction. Each of these functions plays a crucial role in the overall operation of a receiver.

Reception is the initial stage where the receiver captures electromagnetic waves from the environment. This is essential for any communication system, as it is the process that allows the receiver to 'hear' the signals being transmitted.

Detection is the process of identifying the presence of a signal within the noise. It involves extracting the desired information from the received signal, which is important for ensuring that the message can be accurately interpreted.

Selection refers to the ability of the receiver to isolate a particular signal from multiple signals that may be present at the same time. This involves tuning to a specific frequency or channel, which ensures that the receiver only processes the intended transmission.

Reproduction is the final step where the detected and selected signal is converted back into a form that can be used by the end-user, such as sound through speakers or data to be displayed on a screen.

Together, these functions enable a receiver to effectively capture and process signals, making them essential for its operation in any communication system.