Surveying Online Test – Paper 3

1. When a chain line encounters a river:

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

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

4. *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?

5. The quadrantal system confines the user to measure the bearings from

6. The angle which the true meridian makes with the magnetic meridian is called

7. Ten readings were recorded in a level field book. If the instrument was shifted after the 2nd and 6th readings, then the foresight readings are

8. Bowditch's rule is applied to

9. The contour lines are perpendicular to the

10. The accuracy required in precise leveling is of the order of (Where K is the total distance of the level line in KM)

11. For a line AB

12. The purpose of triangulation in a chain survey is

13. *The correction for refraction is given by

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

15. The maximum allowable limit up to which a measurement may vary from the true value is known as

16. For any point on the surface with a given inclination, the contour gradient possible is

17. The types of leveling used for Geodetic survey is

18. The needle is adjusted for

19. The method of leveling in which the plane table is set at only one station to take detail is known as:

20. *When it is not possible to set up the level, midway between the two points, then the difference in elevation between them is measured by

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

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

23. The image of the objectives formed should lie

24. Isogonic lines are

25. Local attraction at a place may be due to

26. The last reading of leveling is always at

27. Direction of the closing error is given by

28. The stadia hairs are not used in

29. The method most suitable for plotting in hilly areas is:

30. The horizontal distances obtained by tacheometry are corrected for

31. Find the length of curve if the radius of the curve is 50 m, and the angle of deflection is 60°

32. 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

33. Secular variation is an important factor because

34. The three-point problem is concerned with:

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

36. The best method of interpolation of contours in the direct method of contouring is by

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

38. Contour interval, within the limits of a map

39. An operation for determining the relative elevations of different points on the surface of the earth is known as

40. In trigonometrical leveling, the combined correction is given by (where m=coefficient of refraction)

41. The upper plate

42. 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

43. Open cross-staff is commonly used for setting out

44. *Total station measures

45. Tacheometry is adopted where

46. 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

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

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

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

50. 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