A FM Broad cast transmitter, using modulating signal of frequency 20 kHz has a deviation ratio of 10. The Bandwidth required for transmission is :
Text Solution
Verified by ExpertsThe correct answer is:
D
Given
FM broadcast
Modulating frequency = 20 k Hz = f
Deviation ratio = 
frequency deviation - 
f = f x 10
= 20 kHz x 10 -200 kHz
Bandwidth = 2(f+ 
f)
= 2 (20 + 200) kHz
= 440 kHz
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