Surveying Online Test – Paper 3

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

2. Axis method of traverse correction is used when

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

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

5. The contour line can cross one another on a map only in the case of

6. Sensitivity of a level tube is expressed by

7. 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

8. A poor fix of the table is:

9. A Cadastral Map is a map having

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

11. Limiting the length of offset depends upon

12. The instrument used for centering the plane table accurately is:

13. The absence of spherical aberration in a telescope is known as

14. Chain surveying is used for

15. The representation of general topography of a very flat terrain is possible only

16. Offsets are

17. In plane table instrument for horizontal & vertical measurement without chaining

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

19. The method of tacheometry in which the observation is made with stadia wires with a variable interval is known as

20. For a station to be free from local attraction

21. *Which instrument is not used in plane table

22. If the magnetic bearing of a line is 65° and the true bearing 45°, then the magnetic declination is

23. The rise and fall method

24. The process of bringing the vertical circle to the right of the observer is called

25. When a chain line encounters a river:

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

27. For a dumpy level in perfect adjustment, the horizontal cross hair should be in a plane

28. A level tube is used to make the line of sight horizontal. It is filled with

29. A curve consists of two areas of different radii bending in the same direction and lying on the same side of their common tangent and their centers being on the same side of the curve is known as a

30. The central angle subtended by an arc of 30m of the curve

31. Diurnal variation depends upon

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

33. Theodolite is an instrument used for measuring

34. 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

35. The needle is adjusted for

36. Offset angle taken in chain survey may be

37. A field is measured with a 1.0 percent too-long chain is found to be 10,000 acres. The corrected area of the field will be

38. *The correction for refraction is given by

39. Bench marks are fixed by

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

41. The included angles of the theodolite traverse are generally measured

42. *For the construction of highway/railway

43. Direction of the closing error is given by

44. If the length of a transition curve is such that the full super elevation is attained at the junction with the circular curve, the resultant curve is known as

45. Theodolite traverse is plotted more accurately by

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

47. Chain surveying is used for a small area in

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

49. When the following scale is the smallest one

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