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Range of frequencies alotted for commeri...

Range of frequencies alotted for commerical FM radio broad cast is

A

88 to 108 MHz

B

88 to 108 KHz

C

8 to 88 MHz

D

88 to 108 GHz

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A
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Perhaps, the most commonly used mode of communication involves use of free space as a communication channel between transmitter and receiver. The various possible modes of using of free space have been described below Ground wave communication : This mode is used for low frequency as at high frequency, losses become large. This is useful for distance of the order of 1 km. Space wave communication: The signals are transmitted directly from transmitter to receiver. There is no limit to upper frequency, but its range is limited to few hundred kilometers. The range depends on the height of transmitting antenna Sky wave communication : The signals are sent towards sky They are reflected back towards earth by ionosphere. Its range can be above 500 km. But, very high frequencies (above 10 MHz) are not reflected back. Satellite communication: The signals that cannot be reflected back by ionosphere are reflected back by satellite. Moon is a passive satellite of earth. The frequency range allotted to FM radio broadcast is 88 MHz to 108 MHz. Which of the following communication channels can be used for its transmission? A. Sky wave communication only B. Space wave communication only C. Satellite communication only D. Either space wave communication or satellite communication

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RESONANCE ENGLISH-COMMUNICATION SYSTEM-Exercise
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  5. When microwave signals follow the curvature of earth, this is known as...

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  6. the transmission media can be

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  7. In A.M., total modulation index should not exceed one or else:

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  11. A TV. Tower has a height 150 m.What is the population density around t...

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  12. Range of frequencies alotted for commerical FM radio broad cast is

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

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  14. An oscillator is producing FM waves of frequency 2 kHz with a variatio...

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  15. Consider telecommunication through optical fibers. Which of the follow...

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  16. Television signals on earth cannot be received at distances greater th...

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  17. An amplitude is frequency graph of a frequency medulatal wave is given...

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  18. Which of the following statements is incorrect

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  19. Which of the following statements is false?

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