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MCQs

Total Questions : 74 | Page 4 of 8 pages
Question 31. Which of the following can justify the principle of sextant?
  1.    β = α/2
  2.    α = β*2
  3.    α = β+2
  4.    α = β-2
 Discuss Question
Answer: Option D. -> α = β-2
Answer: (d).α = β-2
Question 32. Which classification of the sextant is used for navigation purposes?
  1.    Box sextant
  2.    Nautical sextant
  3.    Vibrating sextant
  4.    Sounding sextant
 Discuss Question
Answer: Option B. -> Nautical sextant
Answer: (b).Nautical sextant
Question 33. Which of the following doesn’t serve as an optical requirement in case of sextant?
  1.    Optical axis must be parallel
  2.    Mirrors if placed parallel should be zero
  3.    Mirrors must be perpendicular
  4.    Optical axis must be perpendicular
 Discuss Question
Answer: Option A. -> Optical axis must be parallel
Answer: (a).Optical axis must be parallel
Question 34. Which of the following instruments can be used for locating inaccessible points?
  1.    Sounding sextant
  2.    Vibrating sextant
  3.    Box sextant
  4.    Nautical sextant
 Discuss Question
Answer: Option C. -> Box sextant
Answer: (c).Box sextant
Question 35. Among the following, which doesn’t come under permanent adjustment of sextant?
  1.    Index glass perpendicular with graduated arc
  2.    Horizon glass perpendicular with graduated arc
  3.    Line of sight parallel to plane of graduated arc
  4.    Line of sight perpendicular to plane of graduated arc
 Discuss Question
Answer: Option D. -> Line of sight perpendicular to plane of graduated arc
Answer: (d).Line of sight perpendicular to plane of graduated arc
Question 36. If the index error is not large, error must be corrected.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 37. Which of the following indicates the use of Zenith telescope?
  1.    Zenith placement
  2.    Zero error
  3.    Low precision
  4.    High precision
 Discuss Question
Answer: Option D. -> High precision
Answer: (d).High precision
Question 38. Which of the following need not to be changed in case of box sextant?
  1.    Line of sight
  2.    Index glass
  3.    Index error
  4.    Lens
 Discuss Question
Answer: Option B. -> Index glass
Answer: (b).Index glass
Question 39. Zenith telescope also known as __________
  1.    Zenith sector
  2.    Sextant
  3.    Zenith horizon
  4.    Azimuthal telescope
 Discuss Question
Answer: Option A. -> Zenith sector
Answer: (a).Zenith sector
Question 40. Napier’s rule is used for the calculation of___________
  1.    Latitude
  2.    Declination
  3.    Hour angle
  4.    Horizon
 Discuss Question
Answer: Option C. -> Hour angle
Answer: (c).Hour angle

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