If a FM signal has modulation index m, then what will be its modulation index after passing through frequency tripler?(a) ^m⁄3(b) m(c) 3m(d) 9mThis question was addressed to me in final exam.My doubt is from Noise for SSB-SC topic in portion Noise of Analog Communications

If a FM signal has modulation index m, then what will be its modulatio

1.	If a FM signal has modulation index m, then what will be its modulation index after passing through frequency tripler?(a) ^m⁄3(b) m(c) 3m(d) 9mThis question was addressed to me in final exam.My doubt is from Noise for SSB-SC topic in portion Noise of Analog Communications
Answer» The correct answer is (c) 3m Explanation: Frequency multiplier is an ELECTRONIC circuit that generates an output signal whose output frequency is a MULTIPLE of its INPUT frequency. So after PASSING through frequency tripler, new MODULATION index will be thrice the input which is 3m.

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