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A 1500 Hz modulating voltage fed into an...

A 1500 Hz modulating voltage fed into an FM generator produces a frequency deviation of `2.25 kHz`. If amplitude of the voltage is kept constant but frequency is raised to `6 kHz` then the new deviation will be

A

`4.5 kHz`

B

`54 kHz`

C

`27 kHz`

D

`15 kHz`

Text Solution

Verified by Experts

The correct Answer is:
b
`m_(f)=(delta)/(f_(m))=(2250)/(500)=4.5`
`:.` New deviation `=2(m_(f)f_(m))=2xx4.5xx6=54kHz`.
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