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The disturbance or distortion in the tra...

The disturbance or distortion in the transmission and processing of message signals is called

A

Noise

B

Attenuation

C

Interference

D

None of these

Text Solution

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The correct Answer is:
A
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AAKASH INSTITUTE-COMMUNICATION SYSTEMS -ASSIGNMENT SECTION A Objective (Only one answer)
  1. A device which provides output in electrical form or it has input in e...

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  2. Decrease in signal strength due to energy losses is called

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  3. The disturbance or distortion in the transmission and processing of me...

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  4. A repeater is a combination of

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  5. What is audible range ?

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

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  7. If lambda is wavelength of radio signals to be transmitted, then the l...

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  8. Why is modulation necessary at all ?

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  9. A device that connects one computer to another across ordinary telepho...

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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. The velocity of electromagnetic waves in a dielectric medium (in(r)=4)...

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

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  13. An 'antenna' is:

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

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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. The distance between consecutive maxima and minima is given by-

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  19. Long distance short-wave radio broadcasting uses

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  20. Broadcasting antennas are generally

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