A) \[{{\upsilon }_{c}}=200Hz;{{\upsilon }_{m}}=50Hz;\mu =1/2\]
B) \[{{\upsilon }_{c}}=150Hz;{{\upsilon }_{m}}=50Hz;\mu =2/3\]
C) \[{{\upsilon }_{c}}=150Hz;{{\upsilon }_{m}}=30Hz;\mu =1/3\]
D) \[{{\upsilon }_{c}}=200Hz;{{\upsilon }_{m}}=30Hz;\mu =1/2\]
Correct Answer: B
Solution :
[b]: Here, \[{{c}_{m}}(t)=30sin(300\pi t)+10(cos(200\pi t)-cos(400\pi t))\]Compare this equation with standard equation of amplitude modulated wave, \[{{c}_{m}}(t)={{A}_{c}}\sin {{\omega }_{c}}t-\frac{\mu {{A}_{c}}}{2}\cos ({{\omega }_{c}}+{{\omega }_{m}})t\] \[+\frac{\mu {{A}_{c}}}{2}\cos ({{\omega }_{c}}-{{\omega }_{m}})t\]
You need to login to perform this action.
You will be redirected in
3 sec
