Surveying Online Test – Paper 3

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

2. *The instrument used to measure horizontal and vertical angle is

3. Obstacle to ranging but not chaining is

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

5. The telescope is said to be normal when the

6. The main difference between theodolite and level is:

7. An anallatic lens is a.... used to remove an additive constant in a tacheometer.

8. The observed reading on a leveling staff was 3.525 m. If the staff was 0.125m off from the original ground level, what should be the correct reading?

9. The number of horizontal cross wires in a stadia diaphragm is

10. The orientation of the table is done by

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

12. The last reading of leveling is always at

13. Which one of the following may not be classified as a natural error?

14. Contour lines

15. Direct distance measurement method is more suitable to measure in

16. The angle that can be set by a French cross-staff is

17. The contour interval depends upon

18. In a constant level tube, the size of the bubble remains constant because the upper wall of the tube has

19. If the staff is held vertical and the angle of elevation and depression are kept the same, then the horizontal distance between the instrument and staff station computed by observation will be

20. When several contours coincide, it indicates

21. Boning rod is used

22. 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

23. With the help of leveling, we measure

24. Tacheometry is best suited

25. A scale representing either three units or only one unit and its fractions up to the second place of the decimal point is

26. The errors due to bad ranging are

27. The types of instrument generally used in the survey of gravity water supply system are:

28. Azimuth (direct angles) is an angle measured in

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

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

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

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

33. A building is an obstacle to

34. 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

35. Personal error in leveling occurs due to

36. The multiplying constant of a tacheometer is

37. *The line of collimation should be parallel to

38. The elevation (BM) of point A is 100 m. Backsight reading at A is 20, and foresight reading at B is 30 m. Find the RL of point B

39. 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

40. 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

41. The intercept of a staff is

42. *When it is not possible to set up the level, midway between the two points, then the difference in elevation between them is measured by

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

44. It is more difficult to obtain good results while measuring the horizontal distance by the stepping method

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

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

47. A Cadastral Map is a map having

48. A series of straight, parallel, and widely spaced contours on a map represent a

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

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