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Q: Direct ranging is done in which of the following case?
  • A. The three point of any survey lines must be intervisible
  • B. Two ends of the survey lines are intervisible
  • C. Local attraction is zero
  • D. Both the ends of the survey line are not intervisible
Correct Answer: Option B - Direct ranging– Direct ranging is the method of ranging that is adopted when the two survey stations are intervisible i.e. the two endpoints of the survey line are visible. Indirect ranging– Indirect ranging is the method of ranging that is used when the two end points of the survey line are either not intervisible or the two points are at a very long distance.
B. Direct ranging– Direct ranging is the method of ranging that is adopted when the two survey stations are intervisible i.e. the two endpoints of the survey line are visible. Indirect ranging– Indirect ranging is the method of ranging that is used when the two end points of the survey line are either not intervisible or the two points are at a very long distance.

Explanations:

Direct ranging– Direct ranging is the method of ranging that is adopted when the two survey stations are intervisible i.e. the two endpoints of the survey line are visible. Indirect ranging– Indirect ranging is the method of ranging that is used when the two end points of the survey line are either not intervisible or the two points are at a very long distance.