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MCQs

Total Questions : 80 | Page 6 of 8 pages
Question 51. Which of the following is not a part of electro magnetic radiation?
  1.    UV
  2.    Visible region
  3.    IR spectra
  4.    None of the mentioned
 Discuss Question
Answer: Option D. -> None of the mentioned
Answer: (d).None of the mentioned
Question 52. Infra red radiation sources may be _______________
  1.    Thermal source
  2.    Non-thermal source
  3.    Thermal or non-thermal source
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Thermal or non-thermal source
Answer: (c).Thermal or non-thermal source
Question 53. Which of the following represents IR wavelength?
  1.    100 nm to 700 nm
  2.    700 nm to 2500 nm
  3.    2500 nm to 5000 nm
  4.    Greater than 2500 nm
 Discuss Question
Answer: Option B. -> 700 nm to 2500 nm
Answer: (b).700 nm to 2500 nm
Question 54. Tungsten filament lamp is a _______________
  1.    Thermal source
  2.    Non-thermal source
  3.    Thermal or non-thermal source
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Non-thermal source
Answer: (b).Non-thermal source
Question 55. Every hot body emits IR radiation.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 56. Semiconductor used in sensors will be _____________
  1.    Pure form
  2.    Doped form
  3.    Pure or doped form
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Pure or doped form
Answer: (c).Pure or doped form
Question 57. A semiconductor can act as ___________________
  1.    Insulator
  2.    Semi conductor
  3.    Pure conductor
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 58. Which of the following represent permalloy?
  1.    Nickel iron alloy
  2.    Nickel platinum alloy
  3.    Nickel gold alloy
  4.    Nickel bronze alloy
 Discuss Question
Answer: Option A. -> Nickel iron alloy
Answer: (a).Nickel iron alloy
Question 59. Silicon and germanium can act as piezo resistive materials.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 60. Permalloy are most suitable for _______________
  1.    Pressure measurement
  2.    Temperature measurement
  3.    Voltage measurement
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> Temperature measurement
Answer: (b).Temperature measurement

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