The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called …………. .
A. Amplitude modulation
B. Frequency modulation
C. Phase modulation
D. Pulse width modulation
Answer:B
The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called …………. .
A. Amplitude modulation B. Frequency modulation C. Phase modulation D. Pulse width modulation