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Communication Systems Quiz-2

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10 Questions

Popular Questions In 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, vAM=4(1+0.2sin314t)sin(314×102t)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, vAM=4(1+0.2sin314t)sin(314×102t)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, vAM=4(1+0.2sin314t)sin(314×102t)v_{AM} = 4 (1 + 0.2\sin 314\,t) \sin (314 \times 10^2\,t) Amplitude of the sidebands will be equal to,