Surveying Online Test – Paper 3

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

2. If the focal length of the objective glass is 20cm, and the distance from the object glass to the trunnion axis is 12cm, the additive constant is

3. Crosshairs in a surveying telescope are fitted

4. Leveling across a river is done by

5. The horizontal distances obtained by tacheometry are corrected for

6. The designation of scale recommended by IS: 1491-1959 is

7. A field is measured with a 1.0 percent too-long chain is found to be 10,000 acres. The corrected area of the field will be

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

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

11. Contour lines

12. Local attraction at a place may be due to

13. The telescope is said to be normal when the

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

15. The optical square is based on the principle of

16. If the level tube is out of adjustment by an angle e, when the telescope is rotated through 180°, it becomes

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

18. Negative errors are caused in the chain when its length is

19. In a closed traverse, the algebraic sum of deflection angles is

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

21. The method most suitable for plotting in hilly areas is:

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

23. In leveling across a hill, the level should be set up on

24. Contour lines look to cross each other in the case of

25. The advantage of anallatic lens is

26. The levels to which the earthwork will have to be carried out is known as

27. *The radius of curvature of the arc of the bubble tube is generally kept

28. If the sights are vertical

29. 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

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

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

32. Cubic parabola is a type of

33. Angular surveying in which both the horizontal and vertical positions of a point are obtained by optical means is known as

34. An imaginary line connecting the points of equal elevation on the ground surface is known as

35. The line normal to the plumb line is known as

36. Obstacle to ranging but not chaining is

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

38. For a dumpy level in perfect adjustment, the horizontal cross hair should be in a plane

39. Hydrographic survey deals with the mapping of

40. An operation for determining the relative elevations of different points on the surface of the earth is known as

41. If the included angle is less than 180°, the deflection angle is

42. Secular variation is an important factor because

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

44. The method of tacheometry in which the stadia hair intercept is fixed is known as

45. Least count is given by

46. Fifteen readings were recorded in a level field book. If the instrument was shifted after the 5th, 10th, and 15th readings, then the foresight readings are

47. Boning rod is used

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

49. Overturning of vehicles on a curve can be avoided by using

50. The levelling head of a transit theodolite consists of