A) \[{{c}_{m}}(t)={{A}_{c}}\sin {{\omega }_{c}}t={{A}_{m}}\sin {{\omega }_{m}}t\]
B) \[{{c}_{m}}(t)={{A}_{c}}+{{A}_{m}})\sin {{\omega }_{c}}t\]
C) \[{{c}_{m}}(t)=[{{A}_{c}}+m(t)]\sin {{\omega }_{c}}t\]
D) None
Correct Answer: C
Solution :
In amplitude modulation, amplitude of carrier wave varies with signal to be modulated. So, modulated signal \[{{c}_{m}}(t)\] is given by \[\Rightarrow \,\,{{c}_{m}}(t)\,=({{A}_{c}}+{{A}_{m}}\sin \,{{\omega }_{m}}\,(t)\,\sin \,{{\omega }_{c}}t\] As \[m(t)\,={{A}_{m}}\,\sin {{\omega }_{m}}t\]You need to login to perform this action.
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