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In frequency modulated wave...

In frequency modulated wave

A

frequency varies with time

B

amplitude varies with time

C

both frequency and amplitude vary with time

D

both frequency and amplitude are constant

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The correct Answer is:
A
In frequency modulation , frequency varies with time .
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-COMMUNICATION SYSTEM-Exercise 1
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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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