Amplitude Modulation

What is the percentage of modulation if the modulating signal is of 7.5V and carrier is of 9V?

• 100

• 83.33

• 91

• 33

What is the modulation index value if Vmax=5.9v and Vmin=1.2v?

• 0.5

• 0.425

• 0.662

• 0.75

What is the carrier frequency in an AM wave when its highest frequency component is 850Hz and the bandwidth of the signal is 50Hz?

• 825

• 695

• 625

• 55

Calculate the power in one of the side band in SSBSC modulation when the carrier power is 124W and there is 80% modulation depth in the amplitude modulated signal.

• 89.33

• 64.85

• 79.36

• 102

Cross talk is

• The disturbance caused in the nearby channel or circuit due to transmitted signal

• Adjacent frequency rejection

• Generation of closely lying side bands

• None of the above