Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 11 (Q.No. 16)
16.
In amplitude modulation the rms value of radio frequency voltage after 40% modulation is 60 mV. If modulation is 80% the rms value after modulation will be about
50 mV
60 mV
66 mV
80 mV
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Henyero said:   2 years ago
Total Transmitted Voltage = Vc √{1+m^2/2}.
60E-3 = Vc √{1+.4^2/2}.
Vc = 0.0577 V.

New Total Transmitted Voltage = 0.0577 √{1+0.8^2/2}.
= 66mV.

Raisul said:   8 years ago
Someone please explain this.

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