Surveying Online Test – Paper 3

1. The imaginary line passing through the intersection of crosshairs and the optical center of the object is known as:

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. The perpendicular distance of the midpoint of the line from the reference meridian is known as

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

5. In a closed traverse, the algebraic sum of deflection angles is

6. *Due to the curvature of the earth, objects look

7. Compensating errors in chaining or other surveys are

8. If the temperature increases, the sensitivity of a bubble tube

9. In normal condition, the difference of fore and back bearing should be?

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

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

12. Sensitivity of a level tube is expressed by

13. A poor fix of the table is:

14. Instrumental error in leveling is an error due to

15. Find the length of curve if R=500 m, Intersection angle= 120°

16. The whole circle bearing 338°42" converted into quadrantal form is given as

17. Chain surveying is used for

18. An invert is taken when the point is

19. The order of accuracy of the elevation of points obtained from a contour map is equal to

20. If n observations are taken, the accidental errors are proportional to

21. A traverse deflection angle is

22. If the included angle is greater than 180°, the deflection angle is

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

24. Which of the following terms is not associated with leveling:

25. A Cadastral Map is a map having

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

27. The sensitivity of the bubble tube expressed in terms of the angular value of one division of the bubble is given by

28. The method of offset laying involving minimum measurement on the ground is

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

30. Tellurometer uses

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

32. For the construction of a highway railway

33. The graduations in a prismatic compass are

34. For Y level, Cooke's, and Cushing levels, the line of collimation should coincide with

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

36. The shape of the vertical curve generally used is

37. A benchmark (BM) is a

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

39. In the case of leveling staff readings are taken by (In the case of target staff)

40. *Total station measures

41. Short offsets are measured with

42. 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

43. The RL of the benchmark is 1000.0 m, and the back sight reading at the benchmark is 2.555 m. Find the staff reading of IS if the RL of IS is 1000.055 m

44. The upper plate

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

46. When the following scale is the smallest one

47. Height of the instrument is equal to:

48. Automatic level has advantages of

49. The bearing of line AB is 200° and that of BC is 270°, the included angle ABC is

50. The levelling head of a transit theodolite consists of