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MCQs

Total Questions : 70 | Page 6 of 7 pages
Question 51. VCO is used for _________________
  1.    Amplification
  2.    Frequency modulation
  3.    Amplitude modulation
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Frequency modulation
Answer: (b).Frequency modulation
Question 52. For mf=5, how many side-bands will have for a modulated signal?
  1.    2
  2.    4
  3.    6
  4.    8
 Discuss Question
Answer: Option D. -> 8
Answer: (d).8
Question 53. Centre frequency of sub carrier signal varies ____________
  1.    +/- 10%
  2.    +/- 7.5%
  3.    +/- 5%
  4.    +/- 2.5%
 Discuss Question
Answer: Option B. -> +/- 7.5%
Answer: (b).+/- 7.5%
Question 54. SCO stands for ___________
  1.    Signal controlled oscillator
  2.    Switch controlled oscillator
  3.    Sub carrier oscillator
  4.    Sweep controlled oscillator
 Discuss Question
Answer: Option C. -> Sub carrier oscillator
Answer: (c).Sub carrier oscillator
Question 55. What will be the frequency modulation index of SCO?
  1.    1
  2.    2
  3.    5
  4.    9
 Discuss Question
Answer: Option C. -> 5
Answer: (c).5
Question 56. Which of the following is correct for tactile sensors?
  1.    Touch sensitive
  2.    Pressure sensitive
  3.    Input voltage sensitive
  4.    Humidity sensitive
 Discuss Question
Answer: Option A. -> Touch sensitive
Answer: (a).Touch sensitive
Question 57. Change in output of sensor with change in input is ____________
  1.    Threashold
  2.    Slew rate
  3.    Sensitivity
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Sensitivity
Answer: (c).Sensitivity
Question 58. Which of the following can be cause for non-zero output when zero input?
  1.    Bias
  2.    Slew
  3.    Offset
  4.    Offset or bias
 Discuss Question
Answer: Option D. -> Offset or bias
Answer: (d).Offset or bias
Question 59. Which of the following error is caused by a reversal of measured property?
  1.    Hysterisis
  2.    Noise
  3.    Digitization error
  4.    Quantization error
 Discuss Question
Answer: Option A. -> Hysterisis
Answer: (a).Hysterisis
Question 60. Sensitivity of a sensor can be depicted by _______________
  1.    Niquist plot
  2.    Pole- zero plot
  3.    Bode plot
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Bode plot
Answer: (c).Bode plot

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