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Modulation is not used to :-...

Modulation is not used to :-

A

Reduce the bandwidth used

B

Separate the transmissions of different users

C

Ensure that intelligence may be transmitted to long distances

D

Allow the use of practical antennas

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The correct Answer is:
A
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ALLEN -SEMICONDUCTORS-Part-3(Exercise-1)
  1. Which of the following pairs are universal gates

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  2. The output of a two input NOR gate is in state 1 when :-

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  3. Modulation is not used to :-

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  4. Amplitude modulation is used for broad casting because

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

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

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  7. An 'antenna' is:

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  8. Long distance short-wave radio broadcasting uses

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

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  10. For television broadcasting, the frequency employed is normally

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

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

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

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

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

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

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

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

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

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