Surveying Online Test – Paper 3

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

2. 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

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

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

5. The graduations in a prismatic compass are

6. If Θ is the angle of the slope, L is the length of the slope, and H is the difference in elevation between the two ends of the link, then the slope correction will be

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

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

9. 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

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

11. Closed contours with higher value inside represent a

12. The orientation of the table is done by

13. The permissible limits of error in chaining for measurement on rough or hilly ground are

14. The closing error is given by

15. The projection of a line on a plane perpendicular to the meridian is known as

16. Contour lines

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

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

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

20. Indirect ranging method is adopted when two points of the chain line are:

21. *Total station is

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

23. The magnetic north is indicated by

24. Local attraction in compass surveying may be due to

25. For a line AB

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

27. The place where the reading is taken is known as

28. 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

29. In a theodolite, the line passing through the intersection of the horizontal and vertical crosshairs and the optical center of the object glass and its continuation is known as

30. Well-conditioned triangle having an angle between

31. Tellurometer uses

32. If the bearing of AB is N 30° W and the bearing of BC is N 40° E, then find the angle < ABC

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

34. The principle of surveying to prevent the accumulation of errors is

35. If the focal length of the objective glass is 20cm, and the distance from the object glass to the trunnion axis is 12cm, the additive constant is

36. Error in tacheometric surveying is due to

37. A series of closely spaced contour lines represent a

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

39. A 30m chain was found to be 20cm too long after chaining 1500m. The correct length of the total distance chained will be

40. The angle of intersection of the horizon mirror and the index mirror of an optical square is

41. The contour interval depends upon

42. Different grades are joined together by a

43. "Fiducial edge" is the working edge of

44. Isogonic lines are

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

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

47. The direction of the steepest slope on a contour is

48. 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

49. For Y level, Cooke's, and Cushing levels, the line of collimation should coincide with

50. A series of straight, parallel, and widely spaced contours on a map represent a