Surveying Online Test – Paper 3

1. The main difference between theodolite and level is:

2. Parallax may be eliminated by

3. 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

4. If the length of a transition curve is such that the full super elevation is attained at the junction with the circular curve, the resultant curve is known as

5. *The leveling of the instrument is done such that

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

7. The contour lines are perpendicular to the

8. In the intersection method of plane tabling, the number of stations needed to be set up is:

9. *Due to the curvature of the earth, objects look

10. Hydrographic survey deals with the mapping of

11. Ten readings were recorded in a level field book. If the instrument was shifted after the 2nd and 6th readings, then the foresight readings are

12. In a closed traverse, the closing error should not be more than (where N is the no. of sides of the traverse)

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

14. An anallatic lens is provided in a tacheometer to measure the horizontal distance.

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

16. Offset angle taken in chain survey may be

17. The accuracy of measurement in chain surveying does not depend upon

18. The errors due to bad ranging are

19. The multiplying constant of a tacheometer is

20. Contour interval is proportional

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

22. Tilting levels are used for

23. The chord of curve less than peg interval is known as

24. The reciprocal leveling eliminates

25. The two-point problem and three-point problems are methods of:

26. 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

27. Two contour lines, having the same elevation

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

29. 'SPIRE TEST' is used in the permanent adjustment of theodolite for

30. Orientation is the operation of keeping the table at successive stations such that:

31. The three-point problem is concerned with:

32. The shape of the vertical curve generally used is

33. The process of turning the telescope about the vertical axis in a horizontal plane is known as

34. The orientation of the table is done by

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

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

37. Revolving of the telescope of a theodolite in a horizontal plane is

38. The types of survey used to fix property lines are

39. The imaginary line passing through the intersection of crosshairs and the optical center of the object is known as:

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

41. The fix of the table is good when:

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

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

44. Instrumental error in leveling is an error due to

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

46. In the case of a telescopic alidade, the adjustment done is

47. The method of offset laying involving minimum measurement on the ground is

48. Handles are connected to the link by

49. 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

50. The levelling head of a transit theodolite consists of