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The sky wave propagation is suitable for...

The sky wave propagation is suitable for radiowaves of frequency

A

upto 2 MHz

B

from 2 MHz to 20 MHz

C

from 2 MHz to 30 mHz

D

none of these

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The correct Answer is:
C
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NIKITA PUBLICATION-COMMUNICATION SYSTEMS-Multiple Choice Questions (Space communication )
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  3. The sky wave propagation is suitable for radiowaves of frequency

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

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  6. An antenna is a device

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  7. The frequency of signals up to 1.5 MHz can be propagated using

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  8. Space wave propagation is used in (a) microwave communication (b) ...

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  9. The Ionosphere reflects the

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  10. Which of the following is not a transmission media used in communicat...

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  11. In which frequency range, space waves are normally propagated?

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  12. While tuning in a certain broad cast station with a receiver, we are a...

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  13. If the frequency of E.M radiations is halved then the energy of EM ra...

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  14. The frequency of a wave propagating in D-region having refractive inde...

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  15. The ground wave communication cannot be occur above a distance of

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  16. Modern is a device which performs

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  17. For the propagation of ground the aerials must be

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  18. Audio signals cannot be directly transmitted into to space because

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  19. Microwaves are the electromagnetic waves with frequency, in the range ...

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  20. In short wave communication waves of which of the following frequencie...

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