engineering recuitment BHEL Engineer Trainee Mock Test 2025 Communication Systems Amplitude Modulation
In AM modulation, the equation of the modulating signal is given by f(t) = Am cos ωmt. If the amplitude of the carrier wave is A and there is no over-modulation, the modulation efficiency will be
1
33.33%
2
38.6%
3
48.3%
4
48.6%