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Three waves A,B and C of frequencies 160...

Three waves A,B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another.Which of the following is the appropriate mode of communication?

A

A is transmitted via space wave while B and C are transmitted via sky wave

B

A is transmitted via ground wave, B via sky wave and C via space wave

C

B and C are transmitted via ground wave while A is transmitted via sky wave

D

B is transmitted via ground wave while A and C are transmitted via space wave

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE-COMMUNICATION SYSTEMS -ASSIGNMENT SECTION A Objective (Only one answer)
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  5. A speech signal of 3 kHz is used to modulate a carrier signal of frequ...

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  7. A message signal of freuency omega(m) is superposed on a carrier wave ...

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

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

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  10. Identify the mathematical expression for amplitude modulated wave:

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

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  17. In an amplitude modulated wave for audio frequency of 500 "cycle"//sec...

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