Surveying Online Test – Paper 3

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

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

3. The foremost work to be executed while traversing with a compass is

4. The instrument used for measuring area on a contour map is

5. The longest chain line passing through the center of the area is known as

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

7. Different grades are joined together by a

8. Metallic tapes are made of

9. The three-point problem is concerned with:

10. Tellurometer uses

11. To orient a plane table without two inaccessible points, the method generally adopted is:

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

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

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

15. 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

16. *The radius of curvature of the arc of the bubble tube is generally kept

17. The range of accuracy in measuring distance by EDM with respect to ODM is

18. *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?

19. Working edge of alidade is called

20. The height of instrument method is

21. Compensating errors in chaining or other surveys are

22. In a closed traverse,

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

24. The theory of probability is applied to

25. Right face and left face readings are taken to

26. While measuring horizontal distance by stepping method we should follow

27. If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as

28. The absence of chromatic aberration in a telescope is known as

29. An invert is taken when the point is

30. Find the contour interval for the map, 1: 25000 in IS & FPS

31. If the needle is truly magnetic and is not sluggish

32. A contour map of the area is essential before proceeding with the construction of

33. The optical square is based on the principle of

34. The outer spindle attached to the lower plate in a transit theodolite is known as

35. The spacing of cross-sections in the indirect method of contouring depends upon

36. *The instrument used to measure horizontal and vertical angle is

37. In tacheometric survey, the method which provides easy reading of the staff is

38. The horizontal distances obtained by tacheometry are corrected for

39. Isogonic lines are

40. The two-point problem as compared to the three-point problem is:

41. The difference between the sum of the measured angles and the theoretical sum of the angles of a closed traverse is called the

42. Two contour lines, having the same elevation

43. Secular variation is an important factor because

44. A relatively fixed point of known elevation above the datum is called

45. In the intersection method of plane tabling, the number of stations needed to be set up is:

46. Dumpy level is used when

47. The vertical distance between any two consecutive contours is known as

48. Bowditch's rule is applied to

49. Which one of the following may not be classified as a natural error?

50. Limiting the length of offset depends upon