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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

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The correct Answer is:
B
The frequency of modulated wave varies as amplitude of modulating wave .
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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-

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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-COMMUNICATION SYSTEM-Exercise 1
  1. Ozone layer above earth's atmosphere will not

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  2. The air of earth's atmosphere responsible for absorbing a large port...

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  3. Match the following column I and Column II

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  4. A radiowave that travels in a straight line from the transmitting ante...

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  5. In process of amplitude modulation of signal to be transmitted . S...

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  6. In amplitude modulation, carrier wave frequencies are:

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  7. In a detector, output circuit consists of R = 10kOmega and C = 100 p F...

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  8. For efficient transmission, transmitting antenna has length comparable...

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  9. A radio transmitter radiates 1 kW power at a wavelength 198.6 m. How m...

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  10. A 100 m long anteena is mounted on a 500 m tall building. The complex ...

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  11. A 1000 kHz carrier wave is modulated by an audio signal of frequency r...

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  12. In frequency modulation

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  13. In frequency modulated wave

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  14. A speech signal of 3 kHz is used to modulate a carrier signal of frequ...

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  15. A transducer , in communication system in a device that

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  16. In an amplitude modulated wave , the maximum amplitude is 10V and th...

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  17. Which of the following is not transducer?

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  18. An oscillator is producing FM waves of requency 2kHz with a variation ...

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  19. A modulating signal is a square wave as shown in the following figur...

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  20. A sinusoidal carrier wave of amplitude 40 V is amplitude modulated by ...

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