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MCQs

Total Questions : 40 | Page 2 of 4 pages
Question 11. Man made noise are ___________ variations.
  1.    Amplitude
  2.    Frequency
  3.    Phase
  4.    Both phase and frequency
 Discuss Question
Answer: Option A. -> Amplitude
Question 12. In TV transmission, sound signal is ___________ modulated
  1.    Amplitude
  2.    Frequency
  3.    Phase
  4.    None of the above
 Discuss Question
Answer: Option B. -> Frequency
Question 13. In TV transmission, picture signal is ___________ modulated
  1.    Frequency
  2.    Phase
  3.    Amplitude
  4.    None of the above
 Discuss Question
Answer: Option C. -> Amplitude
Question 14. The superhetrodyne principle provides selectivity at ___________ stage
  1.    RF
  2.    IF
  3.    audio
  4.    Before RF
 Discuss Question
Answer: Option B. -> IF
Question 15. Most of the amplification in a superhetrodyne receiver occurs at ___________ stage
  1.    IF
  2.    RF amplifier
  3.    Audio amplifier
  4.    Detector
 Discuss Question
Answer: Option A. -> IF
Question 16. A high Q tuned circuit will permit an amplifier to have high ___________
  1.    Fidelity
  2.    Frequency range
  3.    Sensitivity
  4.    Selectivity
 Discuss Question
Answer: Option D. -> Selectivity
Question 17. If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ___________
  1.    Sensitivity
  2.    Selectivity
  3.    Distortion
  4.    Fidelity
 Discuss Question
Answer: Option D. -> Fidelity
Question 18. In amplitude modulation, bandwidth is ___________ the audio signal frequency
  1.    Thrice
  2.    Four times
  3.    Twice
  4.    None of the above
 Discuss Question
Answer: Option C. -> Twice
Question 19. A 100 V carrier is made to vary between 160 V and 40 V by the signal. What is the modulation factor?
  1.    3
  2.    6
  3.    5
  4.    None of the above
 Discuss Question
Answer: Option B. -> 6
Question 20. In amplitude modulation, the ___________ of carrier is varied according to the strength of the signal.
  1.    Amplitude
  2.    Frequency
  3.    Phase
  4.    None of the above
 Discuss Question
Answer: Option A. -> Amplitude

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