Surveying Online Test – Paper 3

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

2. The upper plate

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

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

5. For the construction of a highway railway

6. The stadia hairs are not used in

7. 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

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

9. The contour line can cross one another on a map only in the case of

10. For a line AB

11. 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:

12. The process of bringing the vertical circle to the right of the observer is called

13. Personal error in leveling occurs due to

14. For a tacheometer, the additive and multiplying constants are respectively

15. Size of a theodolite is specified by

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

17. The quadrantal system confines the user to measure the bearings from

18. Right face and left face readings are taken to

19. The shape of the vertical curve generally used is

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

21. In the direct method of contouring, the process of locating points lying on a contour is known as

22. The area of the earth's surface is taken into account only if the extent of the survey is more than

23. Theodolite is an instrument used for measuring

24. If the magnetic declination is (-)6°0' and the reduced bearing of a line is S40°01'E, the true bearing of the line is

25. Actually, which is not the method of plane tabling?

26. Short offsets are measured with

27. Angle of 45° with the chain line may be set out with

28. Axis method of traverse correction is used when

29. 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

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

31. Local attraction at a place may be due to

32. The maximum number of omitted measurements that can be calculated from latitudes and departures of a closed traverse is

33. "Fiducial edge" is the working edge of

34. An offset more than 15m in length is known as

35. The outer spindle attached to the lower plate in a transit theodolite is known as

36. A level line is a

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

38. In compass surveying

39. 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

40. In a closed traverse,

41. A poor fix of the table is:

42. In a survey, it was recorded that Σrise = 0, then

43. Diurnal variation depends upon

44. A 30m chain was found to be 20cm too long after chaining 1500m. The correct length of the total distance chained will be

45. The angle of intersection of a curve is the angle between

46. When the following scale is the smallest one

47. Pick up the odd statement

48. A traverse survey can be plotted

49. Height of the instrument is equal to:

50. In a theodolite, staff readings for upper, middle, and lower crosshairs are 1.4, 0.9 & 0.4, respectively. If the height of the tower is 100m, then find the horizontal distance between the instrument station and the base of the tower