Surveying Online Test – Paper 3

1. Error in tacheometric surveying is due to

2. If the observed reading of a level staff is 3.83m, and at the point sighted the staff is 0.15m off from the vertical through the bottom, the correct reading will be

3. A traverse deflection angle is

4. *The observed reading on a leveling staff was 3.545 m. If the staff was 0.150m off from the original ground level, what should be the correct reading?

5. The distance between terminal points computed from a subsidiary traverse run between them is known as

6. 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

7. Contour interval is proportional

8. Leveling across a river is done by

9. If the bearing of AB is N 30° W and the bearing of BC is N 40° E, then find the angle < ABC

10. In a closed traverse,

11. *The correction for refraction is given by

12. Boning rod is used

13. In a survey, it was recorded that Σrise = 0, then

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

15. Tacheometry is adopted where

16. The line normal to the plumb line is known as

17. Find the length of curve if radius of curve

18. A leveling station is a point where:

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

20. Ten readings were recorded in a level field book. If the instrument was shifted after the 2nd and 6th readings, then the foresight readings are

21. The effect of local attraction is observed in

22. The position of a point can be fixed more accurately by

23. The reduced level of the line of collimation is 50m, and the staff reading at the base of the pillar is 1.15 m. Find the reduced level of the base of the pillar

24. The telescope is said to be normal when the

25. The true bearing of a line can be calculated as (Where the declination is to the east.)

26. If the station A and B are equally affected and in the different direction, then the difference between the forebearing and back bearing of a line AB should be

27. Butt rods are used for measuring

28. If the needle of the compass is sluggish the type of error will be

29. The W.C.B of a line is preferred to a quadrantal bearing merely because

30. Which one is the simplest survey?

31. Offset angle taken in chain survey may be

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

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

34. If the sights are vertical

35. When the angular and linear measurements are equally precise in traversing, the balancing of the traverse is done by:

36. The quadrantal system confines the user to measure the bearings from

37. It is more difficult to obtain good results while measuring the horizontal distance by the stepping method

38. Plane table survey is considered good as compared to other surveys since:

39. 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:

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

41. The "point of tangency" of a simple circular curve is

42. The needle is adjusted for

43. Methods adopted for traversing are

44. If a chain is found too short on testing, it can be adjusted by

45. 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

46. The triangle formed by joining the position of the known points on plane table survey is known as:

47. The longitudinal section of the surface of the bubble tube is

48. The stadia hairs are not used in

49. The purpose of triangulation in a chain survey is

50. The projection of a line on a plane perpendicular to the meridian is known as