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MCQs

Total Questions : 80 | Page 3 of 8 pages
Question 21. Which of the following is the correct relationship between speed of light in vacuum and frequency of light?
  1.    c=fλ
  2.    c=f
  3.    λ=cf
  4.    c=λ2
 Discuss Question
Answer: Option A. -> c=fλ
Answer: (a).c=fλ
Question 22. In a time interval measuring device, two pulses are used ______________
  1.    To produce triangular wave
  2.    To start and stop gate circuit
  3.    To produce sinusoidal signal
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> To start and stop gate circuit
Answer: (b).To start and stop gate circuit
Question 23. In a dispersive medium, speed of light depends on frequency.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 24. Which of the following range represents frequency range of rainbow colors?
  1.    Below 4×10¹⁴Hz
  2.    Between 4×10¹⁴Hz and 8×10¹⁴Hz
  3.    Above 8×10¹⁴Hz
  4.    Between 0Hz and 8×10¹⁴Hz
 Discuss Question
Answer: Option B. -> Between 4×10¹⁴Hz and 8×10¹⁴Hz
Answer: (b).Between 4×10¹⁴Hz and 8×10¹⁴Hz
Question 25. What will be the frequency of the signal A sin (4πt+ɸ)?
  1.    2Hz
  2.    0.5Hz
  3.    2πHz
  4.    4πHz
 Discuss Question
Answer: Option A. -> 2Hz
Answer: (a).2Hz
Question 26. Start and stop pulses are produced by ______________
  1.    Gate circuit
  2.    Time discriminators
  3.    Oscillators
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Time discriminators
Answer: (b).Time discriminators
Question 27. When interpolation techniques are used?
  1.    For high range of measurement is required
  2.    For high resolution of measurement
  3.    For high range of measurement and high resolution of the measurement is required
  4.    Not the mentioned
 Discuss Question
Answer: Option C. -> For high range of measurement and high resolution of the measurement is required
Answer: (c).For high range of measurement and high resolution of the measurement is required
Question 28. What is the use of PWM technology?
  1.    To amplify output voltage
  2.    To reduce output voltage
  3.    For controlling supply voltage
  4.    For measuring voltage
 Discuss Question
Answer: Option C. -> For controlling supply voltage
Answer: (c).For controlling supply voltage
Question 29. Measuring range is not an important parameter in TIM.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 30. TDC devices are used for ________________
  1.    Indicating frequency of signal
  2.    Indicating time delay in analog format
  3.    Indicating time delay in digital format
  4.    Indicating voltage level
 Discuss Question
Answer: Option C. -> Indicating time delay in digital format
Answer: (c).Indicating time delay in digital format

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