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The phenomenon of loss of power of a gro...

The phenomenon of loss of power of a ground wave is called ……..

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attenuation
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PRADEEP-COMMUNICATION SYSTEMS-Exercise
  1. F(2)- layer of eath's atmosphere is at a vertical height of about ………...

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  2. The electromagnetic wave is of frequency range from 5xx10^5 Hz to 10^...

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  3. The phenomenon of loss of power of a ground wave is called ……..

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  4. A mode of wave propagation is also known as ………

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  5. Sky wave propagation is also called

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  6. The highest frequency of radio waves which the when sent at some angle...

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  7. The distance between transmitting antenna and receiving antenna at whi...

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  8. The first Indian experimental satellite named …… was launched on ……… .

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  9. GPS stands for ……. .

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  10. Three waves A,B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respe...

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  11. A 100 m long anteena is mounted on a 500 m tall building. The complex ...

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  12. A 1 KW signal is transmitted using a communication channel which pro...

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  13. A speech signal of 3 kHz is used to modulate a carrier signal of frequ...

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  14. A message signal frequency omega(m) is superpiosed on a carrier wave o...

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  15. A male voice after modulation-transmission sounds like that of a femal...

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  16. A basic communication system consists of (A) transmitter (B) informat...

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  17. Identify the mathematical expression for amplitude modulated wave:

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  18. An audio signal of 15 kHz frequency cannot be transmitted over long di...

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  19. Audio sine waves of 3 kHz frequency are used to amplitude modulate a c...

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  20. A TV transmission tower has a height of 240 m. Signals broadcast from ...

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