Surveying Online Test – Paper 3

1. The instrument used for centering the plane table accurately is:

2. The boundary of water of a still lake is

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

4. A traverse deflection angle is

5. The maximum permissible difference allowed while taking down the fore bearing and back bearing of a line is

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

7. The representation of general topography of a very flat terrain is possible only

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

9. In the scale of a map is 1:25000, what does it mean:

10. The absence of spherical aberration in a telescope is known as

11. The limiting length of an offset does not depend upon

12. 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:

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

14. "A curve of varying radius introduced between two branches of a compound curve is called

15. A negative declination shows the magnetic meridian to the

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

17. Right face and left face readings are taken to

18. If a chain is found too short on testing, it can be adjusted by

19. Contour lines

20. Find the length of curve if radius of curve

21. The instrument used for measuring area on a contour map is

22. If n observations are taken, the accidental errors are proportional to

23. The "point of tangency" of a simple circular curve is

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

25. Indirect ranging method is adopted when two points of the chain line are:

26. Permanent adjustment is carried out to

27. Axis method of traverse correction is used when

28. The shape of the vertical curve generally used is

29. 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

30. The image of the objectives formed should lie

31. The fundamental lines of transit of the theodolite are

32. Limiting the length of offset depends upon

33. The angular and linear measurement of the part of the traverse can be checked by

34. For the construction of a highway railway

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

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

37. 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

38. Handles of chains are made of

39. *The method of leveling used to carry out the reconnaissance of an area is

40. The perpendicular distance of the midpoint of the line from the reference meridian is known as

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

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

43. If the needle is truly magnetic and is not sluggish

44. Plane table survey is considered good as compared to other surveys since:

45. If the quadrantal bearing of a line is N 35° W, then the whole circle bearing is

46. The device used in computing the horizontal and vertical distances rapidly and conveniently is

47. *The observed reading on a leveling staff was 3.545 m. If the staff was 0.150m off from the original ground level, what should be the correct reading?

48. To orient a plane table without two inaccessible points, the method generally adopted is:

49. 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

50. The magnification of a telescope lens depends upon