Communication Systems Quiz-2

At 100% modulation, let the total power in the sidebands be x% of the total power of the amplitude-modulated wave. Here, ‘x’ is equal to,

The modulation index of an amplitude-modulated wave is 0.4. The fraction of total power carried by the central carrier wave will be equal to,

As the value of the modulation index increases,

In the modulation index is 80%, then, power in each sideband is x% of that in the central carrier band. Here, ‘x’ is equal to,

In a communication system, the process of modulation is done at the

The amplitude of a carrier wave, having a peak amplitude of 50 V, is made to vary between 75 V and 25 V after its amplitude modouls modulation index will be equal to,

With increase in frequency of the EM waves, to be transmitted via ground wave propagation, there is

An amplitude-modulated wave is represented by, $v_{AM} = 4 (1 + 0.2\sin 314\,t) \sin (314 \times10^2\,t)$ The bandwidth of the amplitude-modulated wave is equal to,

An amplitude-modulated wave is represented by, $v_{AM} = 4 (1 + 0.2\sin 314\,t) \sin (314 \times 10^2\,t)$ The minimum and the maximum amplitude of the amplitude modulated wave will be respectively equal to,

An amplitude-modulated wave is represented by, $v_{AM} = 4 (1 + 0.2\sin 314\,t) \sin (314 \times 10^2\,t)$ Amplitude of the sidebands will be equal to,