Surveying Online Test – Paper 3

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

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

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

4. Fifteen readings were recorded in a level field book. If the instrument was shifted after the 5th, 10th, and 15th readings, then the foresight readings are

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

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

7. 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

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

9. The magnetic north is indicated by

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

11. An operation for determining the relative elevations of different points on the surface of the earth is known as

12. The length of the perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to

13. Intersection is preferred to radiation when:

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

15. The Bench Mark of a point is 400m. Backsight reading at the benchmark is 2.20, and the foresight reading of point A is 2.10. Find the RL of point A

16. Distomats is a type of

17. Tilting levels are used for

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

19. The dip of the needle

20. Level surface is parallel to

21. The strength of the fix of a plane table is:

22. Different grades are joined together by a

23. If the staff is held vertical and the angle of elevation and depression are kept the same, then the horizontal distance between the instrument and staff station computed by observation will be

24. The rise and fall method

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

26. Staff intercept means

27. If the quadrantal bearing of a line is N 35° W, then the whole circle bearing is

28. The inclination of the needle to the horizontal towards the pole is called

29. For a line AB

30. True meridians

31. Hydrographic survey deals with the mapping of

32. In leveling, the station where the back sight and foresight readings are taken is known as

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

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

35. In the whole circle system, the bearings are measured

36. "Fiducial edge" is the working edge of

37. Crosshairs in a surveying telescope are fitted

38. For the route survey of a contour map, the method used is

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

40. *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?

41. The most probable value of an observed quantity available from a given set of observations is the one for which the sum of the square of errors is a minimum. This statement is called

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

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

44. Contour lines of different elevations can unite to form one line only in the case of

45. Chainage is the distance measured

46. If the included angle is less than 180°, the deflection angle is

47. The position of a point can be fixed more accurately by

48. Overturning of vehicles on a curve can be avoided by using

49. The multiplying constant of a tacheometer is

50. A transition curve introduced between the tangent and the circular curve should