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प्रश्न
A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal are ______.
पर्याय
2005 kHz, 2000 kHz and 1995 kHz
2000 kHz and 1995 kHz
2 MHz only
2005 kHz and 1995 kHz
MCQ
व्याख्या
उत्तर
A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal are 2005 kHz, 2000 kHz and 1995 kHz.
Explanation:
Amplitude modulated wave consists of three frequencies are ωc + ωm, ω, ωc - ωm
i.e. 2005 kHz, 2000 kHz and 1995 kHz.
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