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In frequency modulation...

In frequency modulation

A

the amplitude of modulated wave varies as frequency of carrier wave

B

the frequency of modulated wave varies as amplitude of modulating wave

C

the amplitude of modulated wave varies as amplitude of carrier wave

D

the frequency of modulated wave varies as frequency of modulating wave

Text Solution

Verified by Experts

The correct Answer is:
D
The process of changing the frequency of a carrier wave (modulated wave) is known as frequency modulation (FM).
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Knowledge Check

  • The difference between phase and frequency modulation

    A
    practically they are same but theoretically they differ
    B
    lies in the power audio response of phase modulation
    C
    lies in the poorer audio response of frequency modulation
    D
    lies in the definitions of modulation and their modulation index

  • The transmission band width in wide band frequency modulation is

    A
    independent of massage band width.
    B
    dependent of message band width.
    C
    both (A) and (B)
    D
    none of these.

  • If f_(0) and f_(f) represent the carrier wave frequencies for amplitude and frequency modulations respectively, then

    A
    `f_(0)gtf_(f)`
    B
    `f_(0)ltf_(f)`
    C
    `f_(0)=f_(f)`
    D
    `f_(0)nef_(f)`