Surveying Online Test – Paper 3

1. Leveling across a river is done by

2. For a line AB

3. If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for:

4. The error eliminated by taking the mean of both face observations is

5. Open cross-staff is commonly used for setting out

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

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

8. Different grades are joined together by a

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

10. Contour interval, within the limits of a map

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

12. "Fiducial edge" is the working edge of

13. If the formation level is less than the ground level, the difference between them at any point will give the

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

15. Actually, which is not the method of plane tabling?

16. Bowditch's rule is applied to

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

18. The closing error is given by

19. 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

20. A chain 33 feet long and consisting of 16 links each 2(1/16) feet long is

21. Hydrographic survey deals with the mapping of

22. 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

23. Isogonic lines are

24. Personal error in leveling occurs due to

25. The contour lines are perpendicular to the

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

27. Local attraction in compass surveying may be due to

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

29. An anallatic lens is provided in a tacheometer to measure the horizontal distance.

30. The number of horizontal cross wires in a stadia diaphragm is

31. Metallic tapes are made of

32. The types of survey used to fix property lines are

33. For a station to be free from local attraction

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

35. During leveling staff readings are taken 1.0, 0.8 & 0.6 from consecutive horizontal crosshairs, the staff intercept should be

36. If the sights are vertical

37. Azimuth (direct angles) is an angle measured in

38. Offsets are

39. In a tacheometer provided with an anallatic lens, the distance between the object glass and the vertical axis is 15 cm. The focal length of the objective is 15 cm, and that of the anallatic lens is 10 cm. Hence, the distance between the two lenses is

40. The purpose of triangulation in a chain survey is

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

42. In the stadia method, if k is the multiplying factor, s is the staff intercept, c is the additive constant of the instrument, then the distance equation is given by the expression

43. An instrumental error in compass survey is because

44. Which one is the simplest survey?

45. An offset scale always has the zero mark at

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

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

48. Diurnal variation depends upon

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

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