Surveying Online Test – Paper 3

1. If the bearing of AB is N 30° W and the bearing of BC is N 40° E, then find the angle < ABC

2. *The line of collimation should be parallel to

3. Secular variation is an important factor because

4. The needle is adjusted for

5. Offset angle taken in chain survey may be

6. The direct method of contouring is

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

8. The survey which is carried out to determine absolute locations and the direction of any line on the surface of the earth by making observations of heavenly bodies is called

9. The method of leveling in which the plane table is set at only one station to take detail is known as:

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

11. In compass surveying

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

13. In survey works, declination varies from time to time and place to place. The main important variation is

14. Tacheometry is adopted where

15. The shape of the vertical curve generally used is

16. The inclination of the needle to the horizontal towards the pole is called

17. The height of instrument method is

18. *Which instrument is not used in plane table

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

20. The maximum angular error in laying the direction is 3°; if this maximum displacement of the point on paper is the same for both sources of error, the accuracy in the offset measurement will be

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

22. Which one is wrong?

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

24. Placing the table over the station such that the station plotted on the sheet is exactly above the corresponding station on the ground is:

25. The Normal chord of a curve should be

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

27. The errors due to bad ranging are

28. The two-point problem is:

29. If a chain is found too short on testing, it can be adjusted by

30. 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

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

32. Theodolite is an instrument used for measuring

33. Chainage is the distance measured

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

35. If the needle of the compass is sluggish the type of error will be

36. The magnetic north is indicated by

37. Handles of chains are made of

38. If the distance between two points A and B is 1km, the combined correction for curvature and refraction will be

39. 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

40. In profile leveling, staff readings on two neighboring pegs 20m apart are 1.200 and 1.00, respectively. Therefore, the proposed road has a

41. Closed contours with higher value inside represent a

42. *The observed reading on a leveling staff was 3.545 m. If the staff was 0.150m off from the original ground level, what should be the correct reading?

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

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

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

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

47. Magnetic declination

48. Metallic tapes are made of

49. Short offsets are measured with

50. Tilting levels are used for