Question

The amount of frequency deviation in fm signal depends on select one: a. Modulating frequency b. Transmitter amplifier c. Amplitude of the modulating signal d. Carrier frequency

Answer 1

The amount of frequency deviation in frequency modulated(fm) signal depends on option

a. Modulating frequency

 Explanation,

Maximum frequency deviation is defined as the product of Modulating index and modulating frequency.

Δf = μ x Fm

where μ = modulating index and

Fm = modulating frequency.

Hence we can see that the amount of frequency deviation in frequency modulated(fm) signal is directly proportional to a. Modulating frequency

Answer 2

Answer:

(c)Amplitude of modulating signal

Explanation:

we know that,

f'=k.Am

where f'=frequency deviation

k=frequency sensitivity

Am=Amplitude of modulating signal