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MCQs

Total Questions : 80 | Page 7 of 8 pages
Question 61. OTDR stands for _______________
  1.    Optical time domain reflectometer
  2.    Optical transfer data rate
  3.    Optical time data registers
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Optical time domain reflectometer
Answer: (a).Optical time domain reflectometer
Question 62. Silica glass of hydroxyl concentration can be used for ___________ of wavelength.
  1.    100 nm to 250 nm
  2.    250 nm to 800 nm
  3.    800 nm to 1500 nm
  4.    100 nm to 3400 nm
 Discuss Question
Answer: Option B. -> 250 nm to 800 nm
Answer: (b).250 nm to 800 nm
Question 63. Which of the following is not correct for fibre optic sensors?
  1.    Immune to electro magnetic interference
  2.    Immune to radiation hazard
  3.    Can be used in harsh environments
  4.    None of the mentioned
 Discuss Question
Answer: Option D. -> None of the mentioned
Answer: (d).None of the mentioned
Question 64. General spectral range for silica glass is _______________
  1.    Less than 200 nm
  2.    Between 200 nm to 2200 nm
  3.    Between 2000 nm to 5000 nm
  4.    Greater than 3000 nm
 Discuss Question
Answer: Option B. -> Between 200 nm to 2200 nm
Answer: (b).Between 200 nm to 2200 nm
Question 65. Fluoride glass is used with __________
  1.    IR waves
  2.    UV rays
  3.    Normal light
  4.    All of the mentioned
 Discuss Question
Answer: Option A. -> IR waves
Answer: (a).IR waves
Question 66. Epoxy material in fibre optics is intended for ________________
  1.    Better optical properties
  2.    Better reflection
  3.    Better sealing
  4.    Reducing noise
 Discuss Question
Answer: Option C. -> Better sealing
Answer: (c).Better sealing
Question 67. Plastics optical cables can be used for ________________
  1.    Short range
  2.    Medium range of distance
  3.    Long range of distance
  4.    Very high range of distance
 Discuss Question
Answer: Option A. -> Short range
Answer: (a).Short range
Question 68. Cladding in glass fibre have high refractive index than the core.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 69. Loss associated with plastic fibre is less than glass fibres.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 70. Which of the following represents loss associated with glass fibres?
  1.    3 dB/Km
  2.    10 dB/Km
  3.    0 dB/Km
  4.    50 dB/Km
 Discuss Question
Answer: Option A. -> 3 dB/Km
Answer: (a).3 dB/Km

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