Author Question: Why must modulated signals be demodulated? A. To recover the original intelligence B. To improve ... (Read 58 times)

joblessjake

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Why must modulated signals be demodulated?
 
  A. To recover the original intelligence
  B. To improve the spectral efficiency of digital transmissions
  C. To enable implementation of advanced features
  D. To produce one or more significant sideband pairs

Question 2

When a carrier is conveying intelligence by simply turning it on or off according to a prearranged code, this type of transmission is called ____________.
 
  A. continuous wave
  B. sine wave
  C. square wave
  D. cosine wave



BAOCHAU2803

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Answer to Question 1

A

Answer to Question 2

A



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