Communication Systems - Engineering

Q1:

A 1000 kHz carrier is simultaneously modulated with 300 Hz, 800 Hz and 2 kHz audio sine waves. Which of the following frequency is least likely to be present in the output?

A 1002 kHz

B 1000 kHz

C 999.2 kHz

D 998.0 kHz

ANS:B - 1000 kHz

Frequency present in the sidebands is equal to = fc ± fmfc ± 2fm , fc ± 3fm .