railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Communication Systems Angle Modulation Frequency Modulation
In Frequency modulation
1
Carrier signal frequency varies with the frequency of modulating signal
2
Carrier signal amplitude varies with the frequency of modulating signal
3
Carrier signal frequency varies with the amplitude of modulating signal
4
Carrier signal amplitude varies with the amplitude of modulating signal