The formula for the horizontal distances for inclined sights, on staff held norm

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Question
The formula for the horizontal distances for inclined sights, on staff held normalis
s cos ? + (f + d) cos ? � h sin ?
Options
A. minus sign is used for angle of depression
B. plus sign is used for angle of depression
C. minus sign is used for angle of elevation
D. non of these.

Correct Answer

minus sign is used for angle of depression

Surveying problems

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1. If ? is the angle between the polar ray and the tangent at the point of commencement of a lemniscate curve, the equation of the curve, is
Options
A. l = ksin ?
B. l = ksin 2?
C. l = ksin 3?
D. l = ktan 2?
E. l = kcos 2?

2. Pick up the correct statement from the following :
Options
A. if the image of the object does not fall on the plane of the cross-lines, parallax exists
B. parallax has nothing to do with the eyepiece
C. the eyepiece is adjusted for clear vision of the cross hairs
D. all the above.

5. The tangent to the liquid surface in a level tube, is parallel to the axis of the level tube at
Options
A. every point of the bubble
B. either end of the bubble
C. the mid-point of the bubble
D. no where.

6. Grid lines are parallel to
Options
A. magnetic meridian of the central point of the grid
B. line representing the central true meridian of the grid
C. geographical equator
D. none of these.

9. The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
Options
A. reciprocal levelling
B. precise levelling
C. differential levelling
D. flying levelling

10. Accuracy of elevation of various points obtained from contour map is limited to
Options
A. of the contour interval
B. th of the contour interval
C. rd of the contour interval
D. th of the contour interval.

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