Surveying Online Test – Paper 3

1. A discrepancy is the difference between

2. A poor fix of the table is:

3. If the image formed by the objective of the telescope is not in the plane of crosshairs, it is called

4. A river is an obstacle to

5. A traverse deflection angle is

6. The benchmark of a station A is 500 m, and the back sight reading at the point A is 2 m & foresight reading of station B is 3 m. Find the RL of station B

7. For a station to be free from local attraction

8. The magnetic declination at a place is 7°20' W, the bearing given by the compass is S45°40'E, the true bearing of the place is

9. In the direct method of contouring, the process of locating points lying on a contour is known as

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

11. The purpose of triangulation in a chain survey is

12. In a theodolite, staff readings for upper, middle, and lower crosshairs are 1.4, 0.9 & 0.4, respectively. If the height of the tower is 100m, then find the horizontal distance between the instrument station and the base of the tower

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

14. The bearing of the traverse line is calculated by

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

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

17. The horizontal distances obtained by tacheometry are corrected for

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

19. Which of the following instruments is generally used for baseline measurements?

20. A series of closed contour lines on the map with higher to lower values inside them represent a

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

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

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

24. A negative declination shows the magnetic meridian to the

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

26. 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

27. If the needle of the compass is sluggish the type of error will be

28. Subtense bar is an instrument used for the measurement of horizontal distance in

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

30. *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?

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

32. A transition curve introduced between the tangent and the circular curve should

33. The difference between the sum of the measured angles and the theoretical sum of the angles of a closed traverse is called the

34. Level surface is parallel to

35. In a double-line river, contours are

36. The intercept of a staff is

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

38. The dip of the needle

39. Tacheometry is adopted where

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

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

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

43. The triangle formed by joining the position of the known points on plane table survey is known as:

44. Closed contours with higher value inside represent a

45. While measuring horizontal distance by stepping method we should follow

46. Personal error in leveling occurs due to

47. The magnetic north is indicated by

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

49. The types of leveling used for Geodetic survey is

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