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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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Distinguish between amplitude modulation and frequency modulation.

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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)`

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    What is frequency modulation ?

    Assertion: Amplitude modulation shows more interference than frequency modulation with noise. Reason: Interference is function of amplitude of modulation wave with carrier wave.

    Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast. A radio frequency carrier wave can be modulated using a-

    Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast. In india the radio signals are boarcast using-

    Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast. The rangeof a transmitter is

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