A modulated signal` C_m(t)` has the form `C_m(t) = 30 sin 300pi t + 10 (cos 200pit – cos 400pi t)`. The carrier frequency `f_c` the modulating frequency (message frequency) `f_Omega` and the modulation index `mu` are respectively given by :
The equation of an FM signal is e = 6 sin (10^(6) t + 4 sin 10^(3) t ) . Then, the modulating frequency is
The voltage of an AC supply varies with time (t) as V = 120 sin 100 pi t cos 100 pi t . The maximum voltage and frequency respectively are
The voltage of an AC supply varies with time (t) as V = 120 sin 100 pi t cos 100 pi t . The maximum voltage and frequency respectively are
If E_(c)=10 sin 10^(5) pit and E_(m)=10 sin 400 pi t are carrier and modulating signals respectively , the modulation index is
If A_m and A_c are the amplitudes of modulating signal and carrier wave respectively, then modulation index is given by
A modulated signal is represented as x(1) = 6 sin 1250 t + sin 10^(8) t then the mudulating index is
The voltage of A.C source varies with tiem according equation. V = 120 sin 100 pi t cos 100 pi t .Then the frequency of source is
If a carrier wave c(t)=A sin omega_(c)t is amplitude modulated by a modulator signal m(t)=A sin omega_(m)t then the equation of modulated signal [C_(m)(t)] and its modulation index are respectively
An audio signal v_m = 20 sin 2 pi (1500 t) amplitude modulates a carrier v_C = 80 sin 2pi (100,000t ) . The value of percent modulation is ___
