Surveying Online Test – Paper 3

1. A traverse survey can be plotted

2. A scale representing either three units or only one unit and its fractions up to the second place of the decimal point is

3. Compensating errors in chaining or other surveys are

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

5. Theodolite traverse is plotted more accurately by

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

7. Horizontal equivalent of a uniform slope must be

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

9. Instrumental error in leveling is an error due to

10. The Philadelphia rod is a type of

11. Any arbitrarily assumed level line from which vertical distances are measured is known as

12. Least count is given by

13. The process of turning the telescope about the vertical axis in a horizontal plane is known as

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

15. Find the length of curve if radius of curve

16. Parallax may be eliminated by

17. Natural error in leveling is caused due to

18. The contour lines merge or cross one another on the map in the case of

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

20. Distomats is a type of

21. The theory of probability is applied to

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

23. The bearing of the traverse line is calculated by

24. 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

25. In trigonometrical leveling, the combined correction is given by (where m=coefficient of refraction)

26. The spacing of cross-sections in the indirect method of contouring depends upon

27. In the direct method of contouring, the process of locating points lying on a contour is known as

28. The magnetic north is indicated by

29. The dip of the needle

30. The angular error of closure or summation error should not exceed (Where N is the number of stations or sides.)

31. The method of offset laying involving minimum measurement on the ground is

32. When a chain line encounters a river:

33. 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

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

35. If W is the weight of the chain, L is the span, and P is the tension or pull, the sag correction for the chain will be

36. The longitudinal section of the surface of the bubble tube is

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

38. *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?

39. Under Survey, "working from whole to part" is done

40. Which of the following instruments is generally used for baseline measurements?

41. The closing error is given by

42. A discrepancy is the difference between

43. 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

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

45. The types of leveling used for Geodetic survey is

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

47. 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

48. *For the construction of highway/railway

49. The horizontal distances obtained by tacheometry are corrected for

50. If the magnetic declination is (-)6°0' and the reduced bearing of a line is S40°01'E, the true bearing of the line is