Surveying Online Test – Paper 3

1. Short offsets are measured with

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

3. In the scale of a map is 1:25000, what does it mean:

4. The three-point problem is concerned with:

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

6. The purpose of triangulation in a chain survey is

7. The difference between the most probable value of a quantity and its observed value is

8. 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

9. The sag correction is always

10. Sensitivity of a level tube is expressed by

11. Positive error is caused if

12. 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

13. The method of plane tabling generally adopted to obtain details and plotting inaccessible points is:

14. Chainage is the distance measured

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

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

17. If W is the weight of the chain, L is the span, and P is the tension or pull, the sag correction for the chain will be

18. If the included angle is greater than 180°, the deflection angle is

19. The intercept of a staff is

20. The horizontal distances obtained by tacheometry are corrected for

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

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

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

24. Chain surveying is used for

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

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

27. 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

28. The best method of interpolation of contours in the direct method of contouring is by

29. The direct method of contouring is

30. The image of the objectives formed should lie

31. *Total station is

32. To orient a plane table without two inaccessible points, the method generally adopted is:

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

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

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

36. The difference between the two bearings of the last line as observed at the first and the last station of a traverse is known as

37. A level line is a

38. If the image formed by the objective of the telescope is not in the plane of crosshairs, it is called

39. A traverse survey can be plotted

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

41. In trigonometrical leveling, the combined correction is given by (where m=coefficient of refraction)

42. 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

43. If n observations are taken, the accidental errors are proportional to

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

45. Least count is given by

46. An example of a level surface is

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

48. If the quadrantal bearing of a line is N 35° W, then the whole circle bearing is

49. In a closed traverse by included angles, the sum of measured interior angles should be equal to

50. The two-point problem as compared to the three-point problem is: