question_answer1) A modulated signal \[{{C}_{m}}\,\,(t)\]has the form \[{{C}_{m}}\,\,(t)=30\,\sin \,300\pi t+10\,(\cos \,200\pi t-\cos 400\pi t)\].The carrier frequency fc, the modulating frequency (message frequency) \[{{f}_{\omega }}\], and the modulation index \[\mu \]are respectively given by :
JEE Main Online Paper (Held On 10 April 2016)
A)
\[{{f}_{c}}=200\,Hz\,;\,{{f}_{\omega }}=30Hz\,;\,\mu =\frac{1}{2}\]
done
clear
B)
\[{{f}_{c}}=150\,Hz\,;\,{{f}_{\omega }}=50Hz\,;\,\mu =\frac{2}{3}\]
done
clear
C)
\[{{f}_{c}}=200\,Hz\,;\,{{f}_{\omega }}=50Hz\,;\,\mu =\frac{1}{2}\]
done
clear
D)
\[{{f}_{c}}=150\,Hz\,;\,{{f}_{\omega }}=30Hz\,;\,\mu =\frac{1}{3}\]
done
clear
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