Surveying Online Test – Paper 3

1. The surface of zero elevation around the earth, which is slightly irregular and curved, is known as

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

3. 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

4. Which one is wrong?

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

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

7. The horizontal distances obtained by tacheometry are corrected for

8. The dip of the needle

9. In a theodolite, the line passing through the intersection of the horizontal and vertical crosshairs and the optical center of the object glass and its continuation is known as

10. If the station A and B are equally affected and in the different direction, then the difference between the forebearing and back bearing of a line AB should be

11. A discrepancy is the difference between

12. Prolongation of a chain line across an obstruction in chain surveying is done by

13. *For the construction of highway/railway

14. The process of bringing the vertical circle to the right of the observer is called

15. In a traverse, the algebraic sum of the deflection angles, taking the right-hand deflection angles as positive and left-hand deflection as negative, should be equal to

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

17. The tie line is run through the survey to

18. The instrument used to reproduce plans to a different scale is called

19. *The two-peg method is used to check the parallelism between the

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

21. The errors due to bad ranging are

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

23. The spacing of cross-sections in the indirect method of contouring depends upon

24. The minimum horizontal distance between any two consecutive contours is known as

25. An anallatic lens is a.... used to remove an additive constant in a tacheometer.

26. Intersection is preferred to radiation when:

27. Level surface is parallel to

28. The longest chain line passing through the center of the area is known as

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. The Normal chord of a curve should be

31. The amount of correction due to local attraction at a place

32. The theory of probability is applied to

33. If the magnetic declination is (-)6°0' and the reduced bearing of a line is S40°01'E, the true bearing of the line is

34. The trunion axis or transverse axis is

35. The orientation of the table is done by

36. *The line of collimation should be parallel to

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

38. Local attraction at a place may be due to

39. Horizontal equivalent of a uniform slope must be

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

41. "Fiducial edge" is the working edge of

42. The type of survey in which horizontal and vertical distance is measured

43. Find the R.F. of 1cm = 5m

44. If the bearing of AB is N 30° W and the bearing of BC is N 40° E, then find the angle < ABC

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

46. Size of a theodolite is specified by

47. When the angular and linear measurements are equally precise in traversing, the balancing of the traverse is done by:

48. Instrumental error in leveling is an error due to

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

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