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The AM wave contans three frequencies vi...

The AM wave contans three frequencies viz:

A

`(f_(c))/(2) , (f_(c) + f_(s))/(2) , (f_(c) - f_(s))/(2)`

B

`2 f_(c) , 2 (f_(c) + f_(s)) , 2 (f_(c) - f_(s))`

C

`f_(c) , (f_(c) + f_(s)) , (f_(c) - f_(s))`

D

`f_(c) , f_(c) ,f_(c)`

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The correct Answer is:
C
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AAKASH SERIES-COMMUNICATION SYSTEM -LECTURE SHEET (LEVEL - I) (MAIN) (EXERCISE - III) (Straight Objective & More than one Correct Answer Type Questions)
  1. The frequency of a FM transmitter without signal input is called

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  2. The AM wave of equivalent to the summation of

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  3. The AM wave contans three frequencies viz:

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  4. In AM wave the amplitude of each side hand frequency is

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  5. In AM wave, carrier power is given by-

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  6. In AM wave total power of side bands is given by :

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  7. Fraction of total power carried by side bands is given by-

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  8. Modulation factor determines-

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  9. if the maximum and minimum voltage of AM wave are V(max) and V(min), r...

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  10. When m=1 ,power carried by side bands is:

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  11. Which of the following is/are the limitations of amplitude modulation?

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  12. Degree of modulation-

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  13. A signal wave of frequency 12KHz is modulated with a carrier wave of f...

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  14. The antenna current of an AM transmitter is 8A when only the carrier i...

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  15. A 1kW signal is transmitted using a communication channel which provid...

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  16. A speech signal of 3 KHz is used to modulate a carrier signal of frequ...

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  17. A message signal of frequency omega(m) is superposed on a carrier wave...

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  18. 1-V characteristics of four devices are shown in figure. Identif...

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

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  20. Identify the mathematical expression for amplitude modulated wave.

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