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In NBFM, the modulation index is close to __________

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In NBFM, the modulation index is close to __________

(a) 1

(b) greater than 1

(c) 10

(d) infinite

I had been asked this question in an internship interview.

Origin of the question is Single Side Band Transmission in chapter SSB Modulation of Analog Communications

1 Answer

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Best answer
Right answer is (a) 1

Best explanation: In NBFM, the modulation index is less than or close to unity. It is similar to Amplitude modulation except a 180 degree phase shift at the lower sideband.

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