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MCQs

Total Questions : 170 | Page 7 of 17 pages
Question 61. Modulation index is the product of Δfc and fₘ.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 62. Tank circuit contains _____________
  1.    Inductor
  2.    Capacitor
  3.    Both inductor and capacitor
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Both inductor and capacitor
Answer: (c).Both inductor and capacitor
Question 63. Modulation index for music broadcasting ___________ with increasing frequency.
  1.    Increases
  2.    Decreases
  3.    Constant
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Decreases
Answer: (b).Decreases
Question 64. Discriminators are also known as _____________
  1.    Modulators
  2.    Demodulator
  3.    Converters
  4.    Incriminators
 Discuss Question
Answer: Option B. -> Demodulator
Answer: (b).Demodulator
Question 65. Demodulation is the process of _____________
  1.    Extraction of analog signal
  2.    Multiplication with carrier wave
  3.    Extraction of carrier wave
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Extraction of analog signal
Answer: (a).Extraction of analog signal
Question 66. Which of the following act as a slope detector?
  1.    FM detector
  2.    Tuned FM detector
  3.    AM detector
  4.    Tuned AM detector
 Discuss Question
Answer: Option B. -> Tuned FM detector
Answer: (b).Tuned FM detector
Question 67. Which of the following circuit limit amplitude in FM signal?
  1.    Amplitude limiter
  2.    Amplitude controller
  3.    Amplitude magnifier
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Amplitude limiter
Answer: (a).Amplitude limiter
Question 68. Foster-seely detector is ___________
  1.    AM detector
  2.    FM detector
  3.    AM demodulator
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> FM detector
Answer: (b).FM detector
Question 69. Single tuned circuit is used for _______________
  1.    Narrow band operation
  2.    Wide band operation
  3.    Specific band operation
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Narrow band operation
Answer: (a).Narrow band operation
Question 70. Foster-seely detector is used for carrier frequency____________
  1.    Below 1 KHz
  2.    Below 1MHz
  3.    Above 1MHz
  4.    Above 5MHz
 Discuss Question
Answer: Option C. -> Above 1MHz
Answer: (c).Above 1MHz

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