railway DFCCIL Executive 2025 Mock Test Communication Systems Amplitude Modulation

If transmitted power = Pt, modulation index = m, carrier power = Pc, then the total transmitted power in a conventional A.M. system, is given as

1
Pt = 2Pc (1 + m2/2)
2
Pt = Pc(1 + m2/2)
3
Pt = 0.5 Pc (1 + m2/2)
4
Pt = 0.3 Pc (1 + m2/2)
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