Question

Consider the following statements regarding Plane Table surveying : 1. It is less accurate than chain surveying. 2. It is not necessary to do accurate centering of plane table for small scale survey.3. Compass rule may be made use for adjusting the plane table transverse.4. From the instrument station, resectors are drawn to plot the position of object in the field. Of these statements :

A. 1, 2 and 4 are correct B. 2, 3 and 4 are correct C. 1, 2 and 3 are correct D. 1, 3 and 4 are correct

Answer 1

Answer: A.) 1,2 and 4 are correct.

Answer 2

The plane table surveying is less accurate than chain surveying.  It is not necessary to do accurate centering of the plane table for small-scale surveys. From the instrument station, resectors are drawn to plot the position of the object in the field. (Option A)

• Plane table surveying is a method of the survey in which the field observations and plottings are done on the graph simultaneously. It is a very simple survey method.
• The plane survey method is less accurate than chain surveying. This method does not use any kind of machine. So, it is very cheap and affordable.
• The plane table surveying is a very fast technique and is used in small-scale surveys. So, it is not necessary to do accurate centering of the plane table for the small-scale surveys. It is suitable for small-scale surveying.
• Resectors can be drawn to plot the position of the object in the field.

Hence, Option A is correct.

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