Surveying Online Test – Paper 3

1. In a theodolite, staff readings for upper, middle, and lower crosshairs are 1.4, 0.9 & 0.4, respectively. If the height of the tower is 100m, then find the horizontal distance between the instrument station and the base of the tower

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

3. A traverse consists of six sides; then the sum of external angles must be

4. When the following scale is the smallest one

5. A level line is a

6. An offset more than 15m in length is known as

7. A 30m chain was found to be 20cm too long after chaining 1500m. The correct length of the total distance chained will be

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

9. Level surface is parallel to

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

11. Intersection is preferred to radiation when:

12. Well-conditioned triangle having an angle between

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

14. *Total station measures

15. *Error due to imperfect adjustment of plate level is termed as

16. The minimum horizontal distance between any two consecutive contours is known as

17. The tie line is run through the survey to

18. The device used in computing the horizontal and vertical distances rapidly and conveniently is

19. Azimuth and altitude of a star

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

21. The stadia hairs are not used in

22. The scale used to measure and to set out the angles is

23. A staff reading taken on a benchmark/ known elevation or change point is known as

24. Local attraction in compass surveying may be due to

25. Area of triangle joining three corner points in comparison to the circle same three points:

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

27. The principle of surveying to prevent the accumulation of errors is

28. The fundamental lines of transit of the theodolite are

29. Placing the table over the station such that the station plotted on the sheet is exactly above the corresponding station on the ground is:

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

31. The process of turning the telescope about the vertical axis in a horizontal plane is known as

32. In a double-line river, contours are

33. The two-point problem and three-point problems are methods of:

34. The tacheometric method is a more suitable method for preparing the contour map of

35. *For the construction of highway/railway

36. You are requested to carry out a survey for the construction of a small airport in a mountainous region of Nepal. Which of the following surveying method will you choose?

37. An example of a level surface is

38. The location of the contour gradient for a highway is best set out from

39. *Total station is

40. If the image formed by the objective of the telescope is not in the plane of crosshairs, it is called

41. Natural error in leveling is caused due to

42. Isogonic lines are

43. A disadvantage of plane table survey is:

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

45. The limiting length of an offset does not depend upon

46. A series of closely spaced contour lines represent a

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

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

49. For any point on the surface with a given inclination, the contour gradient possible is

50. Leveling across a river is done by