Surveying Online Test – Paper 3

1. The process of turning the telescope about the vertical axis in a horizontal plane is known as

2. With the help of leveling, we measure

3. A staff reading taken on a benchmark/ known elevation or change point is known as

4. The maximum angular error in laying the direction is 3°; if this maximum displacement of the point on paper is the same for both sources of error, the accuracy in the offset measurement will be

5. *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?

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

7. The number of horizontal cross wires in a stadia diaphragm is

8. Contour interval, within the limits of a map

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

10. The angle of intersection of the horizon mirror and the index mirror of an optical square is

11. The types of survey used to fix property lines are

12. The most probable value of an observed quantity available from a given set of observations is the one for which the sum of the square of errors is a minimum. This statement is called

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

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

15. The sensitivity of the bubble tube expressed in terms of the angular value of one division of the bubble is given by

16. The length of an Engineer's chain is

17. The types of instrument generally used in the survey of gravity water supply system are:

18. The chain length which is not the standard metric chain length is

19. Which one is wrong?

20. Local attraction at a place may be due to

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

22. The chord of curve less than peg interval is known as

23. For the route survey of a contour map, the method used is

24. The two-point problem is:

25. A building is an obstacle to

26. The spacing of crosshairs in a stadia diaphragm of a tacheometer is 1.5mm, and the focal length of the objective glass is 30cm, the multiplying constant of the tacheometer is

27. Hydrographic survey deals with the mapping of

28. The length of the perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to

29. If the sum of northing of a traverse exceeds the sum of southing by 2m and the sum of easting exceeds the sum of westing by 2m, the resulting closing error will be

30. Natural error in leveling is caused due to

31. 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

32. 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

33. Contour lines of different elevations can unite to form one line only in the case of

34. Contour lines

35. A traverse consists of six sides; then the sum of external angles must be

36. The reciprocal leveling eliminates

37. The contour lines merge or cross one another on the map in the case of

38. In survey works, declination varies from time to time and place to place. The main important variation is

39. Bowditch's rule is applied to

40. Offset angle taken in chain survey may be

41. The difference between the two bearings of the last line as observed at the first and the last station of a traverse is known as

42. The outer spindle attached to the lower plate in a transit theodolite is known as

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

44. The effect of local attraction is observed in

45. For a line AB

46. The graduations in a prismatic compass are

47. If the included angle is greater than 180°, the deflection angle is

48. The survey stations set up during traversing with the compass should be such that

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

50. 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