Surveying Online Test – Paper 3

1. 'SPIRE TEST' is used in the permanent adjustment of theodolite for

2. Positive error is caused if

3. Metallic tapes are made of

4. When the whole circle bearing of two lines AB and AC are 115° and 41° respectively, then the included angle BAC will be:

5. The surface of zero elevation around the earth, which is slightly irregular and curved, is known as

6. Automatic level has advantages of

7. The angle of intersection of a curve is the angle between

8. Azimuth and altitude of a star

9. The upper plate

10. Plane table survey is considered good as compared to other surveys since:

11. The theory of probability is applied to

12. Methods adopted for traversing are

13. The length of an Engineer's chain is

14. Invar tapes are made of an alloy of

15. *The correction for refraction is given by

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

17. Tacheometry is best suited

18. Crosshairs in a surveying telescope are fitted

19. When several contours coincide, it indicates

20. A benchmark (BM) is a

21. Least count is given by

22. 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

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

24. The magnetic north is indicated by

25. An instrumental error in compass survey is because

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

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

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

29. The types of errors that are of a cumulative nature and can be corrected are known as

30. Contour lines

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

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

33. If S is the value of one smallest division on the main scale, v is the value of one smallest division on the vernier, and n is the number of divisions on the vernier, then the least count is given by

34. *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?

35. In a closed traverse by included angles, the sum of measured interior angles should be equal to

36. The maximum angular error in laying the direction is 3°; if this maximum displacement of the point on paper is the same for both sources of error, the accuracy in the offset measurement will be

37. 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

38. Level surface is parallel to

39. Theodolite traverse is plotted more accurately by

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

41. The difference between the sum of the measured angles and the theoretical sum of the angles of a closed traverse is called the

42. Contours are used to determine

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

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

45. In compass surveying

46. In a dumpy level, the objective and eyepiece lenses are made of two or more small lenses to obtain

47. A poor fix of the table is:

48. Parallax may be eliminated by

49. The reduced level of the line of collimation is 50m, and the staff reading at the base of the pillar is 1.15 m. Find the reduced level of the base of the pillar

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