Surveying Online Test – Paper 3

1. The vertical distance between any two consecutive contours is known as

2. Theodolite traverse is plotted more accurately by

3. Tellurometer uses

4. The curvature and refraction corrections applied to staff readings respectively are

5. The sensitivity of the bubble tube can be increased by

6. The instrument used to reproduce plans to a different scale is called

7. Actually, which is not the method of plane tabling?

8. The errors due to bad ranging are

9. For a tacheometer, the additive and multiplying constants are respectively

10. If the level tube is out of adjustment by an angle e, when the telescope is rotated through 180°, it becomes

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

12. A relatively fixed point of known elevation above the datum is called

13. 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

14. The orientation of the table is done by

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

16. A leveling station is a point where:

17. The W.C.B of a line is preferred to a quadrantal bearing merely because

18. The strength of fix' is poor when:

19. Cubic parabola is a type of

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

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

22. The Q.B of the lines are given by...., ...., & ..... If W.C.B. of the lines are 0°, 135°, 270° respectively

23. Geodetic survey is different from plane surveying because of

24. 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

25. The tacheometric method is a more suitable method for preparing the contour map of

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

27. 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

28. Distomats is a type of

29. 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

30. The boundary of water of a still lake is

31. The chain length which is not the standard metric chain length is

32. Which one of the following may not be classified as personal error

33. Theodolite is an instrument used for measuring

34. A level tube is used to make the line of sight horizontal. It is filled with

35. An anallatic lens is a.... used to remove an additive constant in a tacheometer.

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

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

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

39. The dip of the needle

40. If the sum of northing of a traverse exceeds the sum of southing by 2m and the sum of easting exceeds the sum of westing by 2m, the resulting closing error will be

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

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

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

44. The fundamental lines of transit of the theodolite are

45. In a closed traverse,

46. Handles of chains are made of

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

48. Choose the correct statement:

49. Sensitivity of a level tube is expressed by

50. The accuracy required in precise leveling is of the order of (Where K is the total distance of the level line in KM)