Surveying Online Test – Paper 3

1. A river is an obstacle to

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

3. The accuracy required in precise leveling is of the order of (Where K is the total distance of the level line in KM)

4. In chain survey execution, this first step taken is

5. The graduations in a prismatic compass are

6. *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?

7. The "point of the curve" of a simple circular curve is

8. The most probable value of an observed quantity available from a given set of observations is the one for which the sum of the square of errors is a minimum. This statement is called

9. For a station to be free from local attraction

10. In profile leveling, staff readings on two neighboring pegs 20m apart are 1.200 and 1.00, respectively. Therefore, the proposed road has a

11. Distomats is a type of

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

13. Obstacle to ranging but not chaining is

14. Instrumental error in leveling is an error due to

15. If the intercept on the vertical staff is observed as 1.5mm from a tacheometer, the horizontal distance between the tacheometer and staff station is

16. Contour lines of different elevations can unite to form one line only in the case of

17. The magnetic bearing of a line is 60°, and the true bearing of the same line is 70°. Find the declination

18. In a double-line river, contours are

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

20. Height of the instrument is equal to:

21. The image of the objectives formed should lie

22. Revolving of the telescope of a theodolite in a horizontal plane is

23. Metallic tapes are made of

24. The magnetic north is indicated by

25. Height of instrument method of leveling, as compared to the rise and fall method, is

26. The spacing of crosshairs in a stadia diaphragm of a tacheometer is 1.5mm, and the focal length of the objective glass is 30cm, the multiplying constant of the tacheometer is

27. The Q.B of the lines are given by...., ...., & ..... If W.C.B. of the lines are 0°, 135°, 270° respectively

28. The prismatic compass and the surveyor's compass respectively give

29. The amount of correction due to local attraction at a place

30. The method of tacheometry in which the stadia hair intercept is fixed is known as

31. In a closed traverse,

32. The dip of the needle

33. In a closed traverse, the closing error should not be more than (where N is the no. of sides of the traverse)

34. The strength of fix' is poor when:

35. The number of links in a 30 m metric chain is

36. "Cross-sectioning" and "Longitudinal sectioning" is

37. Plane table surveying is a graphical method of surveying in which:

38. Theodolite is an instrument used for measuring

39. The survey stations set up during traversing with the compass should be such that

40. The optical square is based on the principle of

41. Leveling across a river is done by

42. In survey works, declination varies from time to time and place to place. The main important variation is

43. The best method of interpolation of contours in the direct method of contouring is by

44. *The leveling of the instrument is done such that

45. For the construction of a highway railway

46. The angle subtended by the long chord of a simple curve at its center is equal to

47. The height of instrument method is

48. For accurate work, in comparison to the chain, the steel band is used because it

49. Boning rod is used

50. The important points selected at the ends of the chain lines to command the boundaries of the survey are known as