# What is the deviation ratio if the maximum deviation is 25kHz and the maximum modulating frequency is 15kHz?

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What is the deviation ratio if the maximum deviation is 25kHz and the maximum modulating frequency is 15kHz?

(a) 1.55

(b) 1.667

(c) 4.7

(d) 2.13

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The correct option is (b) 1.667

The explanation is: mf = ^fd⁄fm = ^25⁄15 = 1.667.