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In frequency modulation...

In frequency modulation

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

Text Solution

Verified by Experts

The correct Answer is:
a
In frequency modulated wave, frequency of the carrier wave varies in accordance with the modulating signal.
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FULL MARKS-COMMUNICATION SYSTEMS-ADDITIONAL QUESTIONS(Multiple Choice Questions)
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  2. An antenna is

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  4. Laser light is considered to be coherent because it consist of

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  7. A laser beam is used for locating distant object because it

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  8. In short wave communication, waves of which of the following frequenci...

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  9. The maximum distance upto which TV transmission from a TV tower of hei...

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  10. If the highest modulating frequency of the wave is 5 kHz, the number o...

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  11. In communication with help of antenna if height is doubled, then the r...

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  12. A laser beam is used for carrying out surgery, because it

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  15. What is the cause of Green house effect?

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  16. Ozone layer in atmosphere is useful, because it

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  17. Biological importance of ozone layer is

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  19. LANDSAT series of satellites move in near polar orbits at an altitude ...

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  20. Which of the following is not a transducer?

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