Analog Modulation in Communications Quiz
12 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the modulation index defined as?

  • The ratio of the amplitude of the message signal to the amplitude of the carrier signal (correct)
  • The ratio of the frequency of the message signal to the frequency of the carrier signal
  • The ratio of the amplitude of the carrier to the amplitude of the message signal
  • The ratio of the phase of the message signal to the phase of the carrier signal

Is the modulating signal also known as the baseband signal?

  • True, but only in digital modulation
  • Partially true
  • False
  • True (correct)

Is Vestigial-sideband (AM/VSB) a type of single-sideband modulation?

  • True
  • False (correct)
  • True, but only in certain regions
  • It depends on the frequency used

What is the main purpose of modulation in communication systems?

<p>To reduce noise and interference (B)</p> Signup and view all the answers

How is the envelope of the modulated carrier in Amplitude Modulation (AM) represented?

<p>$A(t)$ (D)</p> Signup and view all the answers

What does AM/DSB-SC stand for?

<p>Amplitude Modulation with Double-Sideband and Suppressed Carrier (D)</p> Signup and view all the answers

What is the primary characteristic that is modified in Analog Modulation?

<p>All of the above (D)</p> Signup and view all the answers

In Double-Sideband, Large Carrier (AM/DSB-LC) modulation, which characteristic of the carrier signal remains constant?

<p>Both frequency and phase (A)</p> Signup and view all the answers

Which of the following is NOT a type of Continuous Wave Modulation?

<p>Pulse Amplitude Modulation (PAM) (A)</p> Signup and view all the answers

What is the purpose of modulation in communications?

<p>To increase the efficiency of radiation (A)</p> Signup and view all the answers

In Pulse Modulation, what characteristic of the pulse train is modified according to the message signal?

<p>Any of the above (D)</p> Signup and view all the answers

Which of the following statements about Pulse Modulation is correct?

<p>None of the above (D)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser