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MCQs

Total Questions : 70 | Page 3 of 7 pages
Question 21. Which of the following sensors provide higher temperature capacity?
  1.    Thermopile
  2.    Pyroelectric sensor
  3.    Lead sulphide sensor
  4.    Silicon sensor
 Discuss Question
Answer: Option D. -> Silicon sensor
Answer: (d).Silicon sensor
Question 22. Temperature sensor of silicon can detect wavelength of ______________
  1.    Less than 0.1 um
  2.    Less than 1.1 um
  3.    Less than 10nm
  4.    Greater than 100nm
 Discuss Question
Answer: Option B. -> Less than 1.1 um
Answer: (b).Less than 1.1 um
Question 23. IR thermography is useful in the medical field.
  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 sensor have a large response time?
  1.    Thermopile
  2.    Pyroelectric sensor
  3.    Lead sulphide sensor
  4.    Silicon sensor
 Discuss Question
Answer: Option A. -> Thermopile
Answer: (a).Thermopile
Question 25. IR thermograph is also known as_______________
  1.    Thermostand
  2.    Heat thermograph
  3.    Thermogram
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Thermogram
Answer: (c).Thermogram
Question 26. PVDF inultrasonic scanning technique can be used at temperature _________________
  1.    Less than 20°C
  2.    Less than 70°C
  3.    Greater than 100°C
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Less than 70°C
Answer: (b).Less than 70°C
Question 27. SNR is signal to noise ratio.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 28. Thickness of PVDF film will be_______________
  1.    Less than 100um
  2.    Less than 10nm
  3.    Less than 100mm
  4.    Less than 1cm
 Discuss Question
Answer: Option A. -> Less than 100um
Answer: (a).Less than 100um
Question 29. Copolymer of PVDF has lower temperature capacity than PVDF.
  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. PVDF is _______________ material.
  1.    Piezoelectric
  2.    Magnetostrictive
  3.    Thermoelectric
  4.    Electrostrictive
 Discuss Question
Answer: Option A. -> Piezoelectric
Answer: (a).Piezoelectric

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