Question
An amplitude modulated wave is represented by the expression $v_{m}=5(1+0.6 \cos 6280 t) \sin \left(211 \times 10^{4} t \right)\; volts$. The minimum and maximum amplitudes of the amplitude modulated wave are, respectively
✓
Answer
$V _{ m }=5(1+0.6 cos 6280 t ) \sin \left(2 \pi \times 10^{4} t \right)$
$V _{ m }=[5+3 cos 6820 t ] \sin \left(2 \pi \times 10^{4} t \right)$
$V _{\max }=5+3=8$
$V _{\min }=5-3=2$
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