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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Communication Systems
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Which of the following is the disadvantage of FM over AM?

$\begin {array} {1 1} (a)\;Larger\: band \: width\: requirement & \quad (b)\;Larger\: noise \\ (c)\;Higher \: modulation\:  power & \quad (d)\;Low\: efficiency \end {array}$


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Frequency modulation requires much wider channel (7 to 15 times) as compared to AM.
Ans : (a)
answered Feb 25, 2014 by thanvigandhi_1

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