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MCQs

Total Questions : 57 | Page 3 of 6 pages
Question 21. Which of the following is known as a scintillation counter?
  1.    Scintillator
  2.    Scintillator along with a photo multiplier tube
  3.    Scintillator along with the crystal
  4.    Scintillator along with position circuitry
 Discuss Question
Answer: Option B. -> Scintillator along with a photo multiplier tube
Answer: (b).Scintillator along with a photo multiplier tube
Question 22. Straight bore collimator is used for thyroid work in the medical field.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 23. A discriminator circuit is which of the following circuits?
  1.    Wheatstone bridge
  2.    Instrumentation amplifier
  3.    Astable multivibrator
  4.    Schmitt trigger
 Discuss Question
Answer: Option D. -> Schmitt trigger
Answer: (d).Schmitt trigger
Question 24. Schmitt triggers are followed by which of the following components?
  1.    Pre-amplifier
  2.    Linear amplifier
  3.    Anti-coincidence circuit
  4.    Discriminator
 Discuss Question
Answer: Option C. -> Anti-coincidence circuit
Answer: (c).Anti-coincidence circuit
Question 25. Which of the following is the function of the discriminator?
  1.    Rejects signals below a certain voltage
  2.    Rejects signals above a certain voltage
  3.    Rejects signal in a range alone
  4.    Filters noise alone
 Discuss Question
Answer: Option A. -> Rejects signals below a certain voltage
Answer: (a).Rejects signals below a certain voltage
Question 26. The difference between the pulses having amplitudes between the two triggering levels is called __________
  1.    Pulse width
  2.    Energy gap
  3.    Window width
  4.    Amplitude variation
 Discuss Question
Answer: Option C. -> Window width
Answer: (c).Window width
Question 27. The pulses having amplitudes between the two triggering levels are given by which of the following components?
  1.    Pre-amplifiers
  2.    Linear amplifiers
  3.    Anti-coincidence circuits
  4.    Discriminators
 Discuss Question
Answer: Option D. -> Discriminators
Answer: (d).Discriminators
Question 28. The measurement of pulse height is useful for energy determination.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 29. Which of the following components cancels all the pulses which trigger both the discriminators?
  1.    Pre-amplifier
  2.    Linear amplifier
  3.    Anti-coincidence circuit
  4.    Discriminator
 Discuss Question
Answer: Option C. -> Anti-coincidence circuit
Answer: (c).Anti-coincidence circuit
Question 30. If number of channels is more than ten, the problems of stability of discrimination voltages arise.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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