Surveying Online Test – Paper 3

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

2. The dip of the needle

3. The sag correction is always

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

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

6. The area of the earth's surface is taken into account only if the extent of the survey is more than

7. Least count is given by

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

9. Theodolite is an instrument used for measuring

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

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

12. The location of the contour gradient for a highway is best set out from

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

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

15. For accurate work, in comparison to the chain, the steel band is used because it

16. A chain 33 feet long and consisting of 16 links each 2(1/16) feet long is

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

18. The types of survey in which fieldwork and plotting proceed simultaneously are:

19. When the whole circle bearing of two lines AB and AC are 115° and 41° respectively, then the included angle BAC will be:

20. In the case of leveling staff readings are taken by (In the case of target staff)

21. Chain surveying is used for

22. The upgrade road meets with the downgrade road, then the curve formed at the junction is called

23. Tacheometry is adopted where

24. The last reading of leveling is always at

25. The trunion axis or transverse axis is

26. In the whole circle system, the bearings are measured

27. Two contour lines, having the same elevation

28. An invert is taken when the point is

29. A disadvantage of plane table survey is:

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

31. The magnification of a telescope lens depends upon

32. Azimuth and altitude of a star

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

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

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

36. A level tube is used to make the line of sight horizontal. It is filled with

37. The orientation of the table is done by

38. The length of an Engineer's chain is

39. A traverse survey can be plotted

40. Normal tension is that pull which

41. The distance between terminal points computed from a subsidiary traverse run between them is known as

42. Right face and left face readings are taken to

43. 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:

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

45. The principle of surveying to prevent the accumulation of errors is

46. A 30 m long chain when tested should not show errors exceeding

47. The direction of the steepest slope on a contour is

48. A negative declination shows the magnetic meridian to the

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

50. Angle of 45° with the chain line may be set out with