A signal contains components at 400 Hz and 2400 Hz. This signal modulates a carrier of frequency 100 MHz. However after demodulation it is found that the 400 Hz signal component is present. The channel Bandwidth is 15 KHz. What is the reason for the higher frequency signal not to be detected properly.
A. Modulation used in FM and BW
B. Modulation used in AM and BW is insufficient
C. Modulation used in FM but pre emphasis is not used
D. Modulation used in AM but detector is for FM
Answer: Option C
This Question Belongs to Electronics And Communications Engineering >> Communication Systems
Related Questions on Communication Systems
It is found that a ship to ship communication suffers from fading. This can be avoided by using
A. Space diversity
B. Frequency diversity
C. Broad band antenna
D. Directional antenna
A. A double-tuned amplifier
B. A high gain D.C. amplifier
C. A cathode follower stage
D. None of the above
A. Filter method
B. Phase cancellation method
C. Good attenuation characteristics
D. All of the above
Join The Discussion