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Frequencies in the UHF range normally pr...

Frequencies in the UHF range normally propagate by means of

A

Ground waves

B

Sky waves

C

Surface waves

D

Space waves

Text Solution

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The correct Answer is:
D
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ALLEN -SEMICONDUCTORS-Part-3(Exercise-1)
  1. Modulation is not used to :-

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  2. Amplitude modulation is used for broad casting because

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  3. Frequencies in the UHF range normally propagate by means of

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  4. Digital signals (i) do not provide a continuous set of values. (ii...

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  5. An 'antenna' is:

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  6. Long distance short-wave radio broadcasting uses

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  7. The power in a two-wire transmission line travels :-

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  8. For television broadcasting, the frequency employed is normally

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  9. The sound waves after being converted into electrical waves are not tr...

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  10. The process of superimposing signal frequency (i.e. audio wave) on the...

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  11. In an amplitude modulated wave for audio-frequency of 500Hz, the appro...

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  12. If there were no atmosphere, the average temperature on the surface of...

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  13. The T.V. transmission tower in Delhi has a height of 240 m. The distan...

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  14. Which of the following is used to produce radio waves of constant ampl...

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

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  16. For sky wave propagation of a 10 MHz signal, what should be the minimu...

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  17. In short wave communication waves of which of the following frequeunci...

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  18. For sky wave propagation of a 10 MHz signal, what should be the minimu...

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  19. In frequency modulation

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  20. Range of frequencies allotted for commercial FM radio broadcast is

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