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MCQs

Total Questions : 148 | Page 4 of 15 pages
Question 31. The sensitivity of measurement is greatly enhanced by using which of the following?
  1.    High magnetic field
  2.    Low magnetic field
  3.    High electric field
  4.    Low electric field
 Discuss Question
Answer: Option A. -> High magnetic field
Answer: (a).High magnetic field
Question 32. ESR is remarkably sensitive when compared with NMR.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 33. Under ideal conditions, a commercial X-band spectrometer can detect of the order of which of the following number of spins at room temperature?
  1.    10¹
  2.    10⁵
  3.    10¹⁰
  4.    10¹²
 Discuss Question
Answer: Option D. -> 10¹²
Answer: (d).10¹²
Question 34. Reflex klystron is used in which of the following frequency ranges?
  1.    1000 to 2000 MHz
  2.    1000 to 10000 MHz
  3.    1000 to 15000 MHz
  4.    1000 to 20000 MHz
 Discuss Question
Answer: Option D. -> 1000 to 20000 MHz
Answer: (d).1000 to 20000 MHz
Question 35. ESR sensitivity increases with __________ temperature and with _________ magnetic field strength.
  1.    Increasing, increasing
  2.    Increasing, decreasing
  3.    Decreasing, increasing
  4.    Decreasing, decreasing
 Discuss Question
Answer: Option C. -> Decreasing, increasing
Answer: (c).Decreasing, increasing
Question 36. In the sample cell, which of the following is selected to give maximum optical transmission in the UV-visible region?
  1.    Tungsten
  2.    Quartz
  3.    Phosphor
  4.    Potassium
 Discuss Question
Answer: Option B. -> Quartz
Answer: (b).Quartz
Question 37. In analytical instrumentation, little circuitry is concerned with the amplification and processing of signals.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 38. Which of the following is known as a nibble?
  1.    1 bit
  2.    4 bits
  3.    8 bits
  4.    16 bits
 Discuss Question
Answer: Option B. -> 4 bits
Answer: (b).4 bits
Question 39. Which of the following can be used to store information?
  1.    Gates
  2.    ADC
  3.    DAC
  4.    Flip-flops
 Discuss Question
Answer: Option D. -> Flip-flops
Answer: (d).Flip-flops
Question 40. Which of the following samples the analog signals to obtain their digital equivalent?
  1.    Analog to digital converter
  2.    Electronic counter
  3.    Comparator
  4.    Digital to analog converter
 Discuss Question
Answer: Option A. -> Analog to digital converter
Answer: (a).Analog to digital converter

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