Surveying Online Test – Paper 3

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

2. In the intersection method of plane tabling, the number of stations needed to be set up is:

3. Working edge of alidade is called

4. Personal error in leveling occurs due to

5. The trunion axis or transverse axis is

6. The optical square is based on the principle of

7. 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

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

9. For the construction of a highway railway

10. Butt rods are used for measuring

11. The contour lines are perpendicular to the

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

13. The errors due to bad ranging are

14. Secular variation is an important factor because

15. *The line of collimation should be parallel to

16. The distance between terminal points computed from a subsidiary traverse run between them is known as

17. The amount of correction due to local attraction at a place

18. If the magnetic bearing of the sun at noon at a place in the southern hemisphere is 150°, the magnetic declination at that place is

19. Orientation is the operation of keeping the table at successive stations such that:

20. Size of a theodolite is specified by

21. The levelling head of a transit theodolite consists of

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

23. 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

24. The image of the objectives formed should lie

25. In a closed traverse,

26. When several contours coincide, it indicates

27. Which one is the simplest survey?

28. Positive error is caused if

29. The foremost work to be executed while traversing with a compass is

30. Contour interval is proportional

31. If the sights are vertical

32. Azimuth and altitude of a star

33. The central angle subtended by an arc of 30m of the curve

34. If the magnetic bearing of a line is 65° and the true bearing 45°, then the magnetic declination is

35. A leveling station is a point where:

36. Isogonic lines are

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

38. If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for:

39. When a chain line encounters a river:

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

41. The process of turning the telescope about the horizontal axis in a vertical plane by a complete revolution is known as

42. Local attraction in compass surveying may be due to

43. For a station to be free from local attraction

44. The sensitivity of the bubble tube expressed in terms of the angular value of one division of the bubble is given by

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

46. The multiplying constant of a tacheometer is

47. 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

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

49. A straight line tangential to the longitudinal curve of the level tube at its center is known as

50. Boning rod is used