In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be 6 V and 2 V respectively. The modulation index is

Question

In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be 6 V and 2 V respectively. The modulation index is (A) 100 % (B) 80 % (C) 60 % (D) 50 %

Tardigrade Admin · Accepted Answer

modulation index =( V max - V min ./ V max + V min .) × 100 % =(6-2/6+2) × 100 %=50 %

Q. In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be $6 V$ and $2 V$ respectively. The modulation index is

$100%$

$80%$

$60%$

$50%$

modulation index $= \frac{V _{m a x} - V _{m i n .}}{V _{m a x} + V _{m i n .}} \times 100%$
$= \frac{6 - 2}{6 + 2} \times 100% = 50%$

Q. In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be 6V and 2V respectively. The modulation index is

100%

80%

60%

50%