Question

In communication system, for a given block diagram of receiver, the boxes 'X' and 'Y' respectively represent

• A. Detector and amplifier
• B. IF stage and amplifier
• C. IF stage and detector
• D. Amplifier and IF stage

Hint:

In receiver systems, the IF stage is crucial for converting signals to lower frequencies, and the amplifier strengthens these signals.

Answer 1

The Correct Option is B

Step 1: Understanding the given diagram.
In the block diagram of a communication system: - The first stage generally refers to the Intermediate Frequency (IF) stage where signals are mixed down to a lower frequency. - The second block is usually the amplifier where the signal is amplified. Thus, the boxes 'X' and 'Y' in the receiver represent the IF stage and the amplifier, respectively. Therefore, the correct answer is (B) IF stage and amplifier.