A) \[{{m}_{f}}=3\]
B) \[{{m}_{f}}=5\]
C) \[S=80\,kHz\]
D) \[S=60\,kHz\]
Correct Answer: B
Solution :
[b] Frequency deviation, \[\Delta f=25\,kHz\] Frequency of modulating signal, \[{{f}_{m}}=5\,kHz\] Modulation index, \[{{m}_{f}}=\frac{\Delta f}{{{f}_{m}}}=\frac{25}{5}=5\] Carrier swing \[=2\times \Delta f=2\times 25\,kHz=50kHz\]
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