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Q: ............... is adopted when two survey stations are inter visible i.e. two ends points of survey line are visible.
  • A. Direct ranging
  • B. Indirect ranging
  • C. Adopted ranging
  • D. Tacheometric ranging
Correct Answer: Option A - There are two methods of ranging– (i) Direct ranging (ii) Indirect ranging Direct ranging – Direct ranging is done when the two ends of the survey lines are intervisible. In such cases ranging can either be done by eye or through some optical instrument such as a line ranger or a theodolite.
A. There are two methods of ranging– (i) Direct ranging (ii) Indirect ranging Direct ranging – Direct ranging is done when the two ends of the survey lines are intervisible. In such cases ranging can either be done by eye or through some optical instrument such as a line ranger or a theodolite.

Explanations:

There are two methods of ranging– (i) Direct ranging (ii) Indirect ranging Direct ranging – Direct ranging is done when the two ends of the survey lines are intervisible. In such cases ranging can either be done by eye or through some optical instrument such as a line ranger or a theodolite.