Analog Communication - Electronic Engineering (MCQ) questions & answers for Q. 13722

Q.  The standard value for Intermediate frequency (IF) in AM receivers is
- Published on 14 Oct 15

a. 455 KHz
b. 580 KHz
c. 10.7 MHz
d. 50 MHz

ANSWER: 455 KHz
 
Intermediate frequency (IF) is a frequency at which the received carrier frequency is shifted for detection of message signal. The IF is generated by mixing the received carrier with the locally generated signal. The IF is generated and is shifted to further amplifiers and detectors for amplification and detection of message signal respectively. In super heterodyne AM receivers, an intermediate frequency of 455 KHz is used.

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