Surveying Online Test – Paper 3

1. 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

2. The instrument used for measuring area on a contour map is

3. The quadrantal bearing of a line is determined by:

4. The maximum permissible difference allowed while taking down the fore bearing and back bearing of a line is

5. In plane table instrument for horizontal & vertical measurement without chaining

6. Contours are used to determine

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

8. Negative errors are caused in the chain when its length is

9. *The two-peg method is used to check the parallelism between the

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

11. Theodolite is an instrument used for measuring

12. Error in tacheometric surveying is due to

13. *Which instrument is not used in plane table

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

15. The two-point problem and three-point problems are methods of:

16. The scale used to measure and to set out the angles is

17. Size of a theodolite is specified by

18. 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

19. Tacheometry is adopted where

20. *The line of collimation should be parallel to

21. The angle which the true meridian makes with the magnetic meridian is called

22. A benchmark (BM) is a

23. The magnetic north is indicated by

24. Hydrographic survey deals with the mapping of

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

26. When the angular and linear measurements are equally precise in traversing, the balancing of the traverse is done by:

27. Intersection is preferred to radiation when:

28. Boning rod is used

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

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

31. 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

32. In survey, it was recorded that Σfall = 0 then

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. Find the length of curve if radius of curve

35. The important points selected at the ends of the chain lines to command the boundaries of the survey are known as

36. The horizontal distances obtained by tacheometry are corrected for

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

38. 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

39. A disadvantage of plane table survey is:

40. For accurate work, in comparison to the chain, the steel band is used because it

41. The true bearing of a line can be calculated as (Where the declination is to the east.)

42. A level line is a

43. Staff intercept means

44. The "point of the curve" of a simple circular curve is

45. Personal error in leveling occurs due to

46. Choose the correct statement:

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

48. "A curve of varying radius introduced between two branches of a compound curve is called

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

50. The orientation of the table is done by