Question
Sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50 V is amplitude modulated by sinusoidal voltage of frequency 10 kHz producing 50% modulation. The lower and upper side-band frequencies in kHz are
Answer: Option A
:
A
Here, fc = 1.5 MHz = 1500 kHz ,fm = = 10 kHz
∴ Low side band frequency
= fc - fm = 1500 kHz - 10 kHz = 1490 kHz
Upper side band frequency
= fc + fm = 1500 kHz + 10 kHz = 1510 kHz
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:
A
Here, fc = 1.5 MHz = 1500 kHz ,fm = = 10 kHz
∴ Low side band frequency
= fc - fm = 1500 kHz - 10 kHz = 1490 kHz
Upper side band frequency
= fc + fm = 1500 kHz + 10 kHz = 1510 kHz
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