Surveying Online Test – Paper 3

1. Compensating errors in chaining or other surveys are

2. In an internal focusing type of telescope, the negative lens provided is

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

4. The sag correction is always

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

6. The correction for curvature as applied to staff reading is

7. Offset angle taken in chain survey may be

8. Find the contour interval for the map, 1: 25000 in IS & FPS

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

10. Size of a theodolite is specified by

11. The length of the perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to

12. 'SPIRE TEST' is used in the permanent adjustment of theodolite for

13. The needle is adjusted for

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

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

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

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

18. Find the RL of the collimation line. If the RL of BM is 100 m & BS staff reading is 5.35 m

19. A series of closed contour lines on the map with higher to lower values inside them represent a

20. An instrumental error in compass survey is because

21. *Total station measures

22. Which of the following terms is not associated with leveling:

23. Contour lines of different elevations can unite to form one line only in the case of

24. Setting up the plane table consists of operations:

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

26. The number of links in a 30 m metric chain is

27. A 20 cm theodolite means

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

29. 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

30. Positive error is caused if

31. Prolongation of a chain line across an obstruction in chain surveying is done by

32. The chord of curve less than peg interval is known as

33. Plane table surveying is a graphical method of surveying in which:

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

35. Horizontal equivalent of a uniform slope must be

36. 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

37. The dip of the needle

38. 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

39. *Which instrument is not used in plane table

40. Bench marks are fixed by

41. The error eliminated by taking the mean of both face observations is

42. *Due to the curvature of the earth, objects look

43. An imaginary line lying through the surface of the ground, having a constant inclination to the horizontal, is known as

44. When a chain line encounters a river:

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

46. The instrument used for centering the plane table accurately is:

47. A chain 33 feet long and consisting of 16 links each 2(1/16) feet long is

48. A level line is a

49. A chain is made up of mild steel or galvanized iron wire of diameter

50. In chain survey execution, this first step taken is