Surveying Online Test – Paper 3

1. *When it is not possible to set up the level, midway between the two points, then the difference in elevation between them is measured by

2. The elevation (BM) of point A is 100 m. Backsight reading at A is 20, and foresight reading at B is 30 m. Find the RL of point B

3. Least count is given by

4. The direction of the steepest slope on a contour is

5. The levels to which the earthwork will have to be carried out is known as

6. Positive error is caused if

7. The shape of the vertical curve generally used is

8. The instrument used to reproduce plans to a different scale is called

9. The three-point problem can be solved by:

10. A 30 m long chain when tested should not show errors exceeding

11. Horizontal equivalent of a uniform slope must be

12. The angle that can be set by a French cross-staff is

13. True meridians

14. A curve consists of two areas of different radii bending in the same direction and lying on the same side of their common tangent and their centers being on the same side of the curve is known as a

15. Tacheometry is best suited

16. The contour lines merge or cross one another on the map in the case of

17. In leveling, the station where the back sight and foresight readings are taken is known as

18. The direct method of contouring is

19. If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for:

20. Level surface is parallel to

21. Indirect ranging method is adopted when two points of the chain line are:

22. If the focal length of the objective glass is 20cm, and the distance from the object glass to the trunnion axis is 12cm, the additive constant is

23. The stadia hairs are not used in

24. The method of plane tabling generally adopted to obtain details and plotting inaccessible points is:

25. In a theodolite, the line passing through the intersection of the horizontal and vertical crosshairs and the optical center of the object glass and its continuation is known as

26. 'SPIRE TEST' is used in the permanent adjustment of theodolite for

27. Which one is wrong?

28. An internal focusing type of telescope is focused by the movement of

29. Chainage is the distance measured

30. The accuracy of measurement in chain surveying does not depend upon

31. For a tacheometer, the additive and multiplying constants are respectively

32. In the scale of a map is 1:25000, what does it mean:

33. Compensating errors in chaining or other surveys are

34. The angle which the true meridian makes with the magnetic meridian is called

35. Any arbitrarily assumed level line from which vertical distances are measured is known as

36. Tacheometry is adopted where

37. The intercept of a staff is

38. Well-conditioned triangle having an angle between

39. The length of the perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to

40. The curvature and refraction corrections applied to staff readings respectively are

41. If the distance between two points A and B is 1km, the combined correction for curvature and refraction will be

42. The resection by a two-point problem as compared to the three-point problem:

43. During chaining along a straight line, the leader of the survey party has three arrows, and while the follower has five arrows. The distance of the follower from the starting point will be

44. If the formation level is less than the ground level, the difference between them at any point will give the

45. The Normal chord of a curve should be

46. Distomats is a type of

47. The surface of zero elevation around the earth, which is slightly irregular and curved, is known as

48. The types of survey used to fix property lines are

49. Find the length of curve if the radius of the curve is 50 m, and the angle of deflection is 60°

50. A 20 cm theodolite means