Surveying Online Test – Paper 3

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

2. The fundamental lines of transit of the theodolite are

3. Ten readings were recorded in a level field book. If the instrument was shifted after the 2nd and 6th readings, then the foresight readings are

4. The tie line is run through the survey to

5. The direct method of contouring is

6. A 30 m long chain when tested should not show errors exceeding

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

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

9. 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

10. Compensator is used to make the line of sight perpendicular to the vertical axis in the case of

11. The types of instrument generally used in the survey of gravity water supply system are:

12. Invar tapes are made of an alloy of

13. The reciprocal leveling eliminates

14. The method most suitable for plotting in hilly areas is:

15. The errors due to bad ranging are

16. The true bearing of a line can be calculated as (Where the declination is to the east.)

17. For the construction of a highway railway

18. Which one of the following may not be classified as a natural error?

19. During chaining along a straight line, the leader of the survey party has three arrows, and while the follower has five arrows. The distance of the follower from the starting point will be

20. Obstacle to ranging but not chaining is

21. The two-point problem is:

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

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

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

25. The observed reading on a leveling staff was 3.525 m. If the staff was 0.125m off from the original ground level, what should be the correct reading?

26. In a traverse, the algebraic sum of the deflection angles, taking the right-hand deflection angles as positive and left-hand deflection as negative, should be equal to

27. Staff intercept means

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

29. The magnetic north is indicated by

30. The maximum number of omitted measurements that can be calculated from latitudes and departures of a closed traverse is

31. Crosshairs in a surveying telescope are fitted

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

33. For a line AB

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

35. The projection of a line on a plane parallel to the meridian is known as

36. The maximum allowable limit up to which a measurement may vary from the true value is known as

37. 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

38. The benchmark of a station A is 500 m, and the back sight reading at the point A is 2 m & foresight reading of station B is 3 m. Find the RL of station B

39. Short offsets are measured with

40. The fix of the table is good when:

41. The magnetic bearing of a line is 60°, and the true bearing of the same line is 70°. Find the declination

42. "Fiducial edge" is the working edge of

43. Find the R.F. of 1cm = 5m

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

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

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

47. The resection by a two-point problem as compared to the three-point problem:

48. A building is an obstacle to

49. In an internal focusing type of telescope, the negative lens provided is

50. The closing error is given by