If L is the perimeter of a closed traverse, ?D is the closing error in departure

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Question
If L is the perimeter of a closed traverse, ?D is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is
Options
A.
B.
C.
D. .

Correct Answer

.

Surveying problems

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1. Pick up the correct statement from the following:
Options
A. the theodolite in which telescope can be rotated in vertical plane is called a transmit
B. when the vertical circle is to the left of the telescope during observation, it is called to be in left face
C. when the vertical circle is to the right of the telescope during observation, it is called to be in right face
D. all the above.

2. For true difference in elevations between two points A and B, the level must be set up
Options
A. at any point between A and B
B. at the exact mid point of A and B
C. near the point A
D. near the point B.

5. If h is the difference in level between end points separated by l, then the slope correction is . The second term may be neglected if the value of h in a 20 m distance is less than
Options
A. m
B. 1 m
C. 2 m
D. 3 m

6. For a closed traverse the omitted measurements may be calculated
Options
A. length of one side only
B. bearing of one side only
C. both length and bearing of one side
D. length or bearing of adjacent side
E. all the above.

7. Pick up the correct statement from the following :
Options
A. the tangent screw enables to give small movement under conditions of smooth and positive control
B. standing on the tripod is the levelling head or trib arch
C. the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
D. all the above.

8. The sensitiveness of a level tube decreases if
Options
A. radius of curvature of its inner surface is increased
B. diameter of the tube is increased
C. length of the vapour bubble is increased
D. both viscosity and surface tension are increased.

9. The limiting length of an offset does not depend upon
Options
A. accuracy of the work
B. method of setting out perpendiculars
C. scale of plotting
D. indefinite features to be surveyed.

10. If f₁ and f₂ are the distances from the optical centre of a convex lens of focal length f to conjugate two points P₁ and P₂ respectively, the following relationship holds good
Options
A. f = f₁ + f₂
B. f = (f₁ + f₂)
C.
D. none of these.

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