Surveying Online Test – Paper 3

1. If the observed reading of a level staff is 3.83m, and at the point sighted the staff is 0.15m off from the vertical through the bottom, the correct reading will be

2. A leveling station is a point where:

3. Instrumental error in leveling is an error due to

4. When the following scale is the smallest one

5. The RL of the benchmark is 1000.0 m, and the back sight reading at the benchmark is 2.555 m. Find the staff reading of IS if the RL of IS is 1000.055 m

6. Compensating errors in chaining or other surveys are

7. The method of tacheometry in which the observation is made with stadia wires with a variable interval is known as

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

9. Compensator is used to make the line of sight perpendicular to the vertical axis in the case of

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

11. A relatively fixed point of known elevation above the datum is called

12. Positive error is caused if

13. Local attraction at a place may be due to

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

15. The included angles of the theodolite traverse are generally measured

16. Leveling across a river is done by

17. Tilting levels are used for

18. For the construction of a highway railway

19. Area of triangle joining three corner points in comparison to the circle same three points:

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

21. The scale used to measure and to set out the angles is

22. *Accuracy of 'fix' by two-point problem is

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

24. 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

25. Any arbitrarily assumed level line from which vertical distances are measured is known as

26. Contour interval is proportional

27. The boundary of water of a still lake is

28. *Total station is

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

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

31. Well-conditioned triangle having an angle between

32. The advantage of anallatic lens is

33. The needle is adjusted for

34. The purpose of triangulation in a chain survey is

35. If S is the value of one smallest division on the main scale, v is the value of one smallest division on the vernier, and n is the number of divisions on the vernier, then the least count is given by

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

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

38. Chain surveying is used for a small area in

39. In plane table instrument for horizontal & vertical measurement without chaining

40. The function of the leveling head is

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

42. The shape of the vertical curve generally used is

43. In a dumpy level, the objective and eyepiece lenses are made of two or more small lenses to obtain

44. The angle subtended by the long chord of a simple curve at its center is equal to

45. Personal error in leveling occurs due to

46. The smaller angle which a survey line makes with the true meridian is known as

47. In a tacheometer provided with an anallatic lens, the distance between the object glass and the vertical axis is 15 cm. The focal length of the objective is 15 cm, and that of the anallatic lens is 10 cm. Hence, the distance between the two lenses is

48. 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

49. Cubic parabola is a type of

50. The types of leveling used for Geodetic survey is