Surveying Online Test – Paper 3

1. The central angle subtended by an arc of 30m of the curve

2. The maximum number of omitted measurements that can be calculated from latitudes and departures of a closed traverse is

3. 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

4. *The correction for refraction is given by

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

6. Theodolite is an instrument used for measuring

7. Magnetic declination

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

9. "Fiducial edge" is the working edge of

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

11. *The radius of curvature of the arc of the bubble tube is generally kept

12. Limiting the length of offset depends upon

13. Under Survey, "working from whole to part" is done

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

15. A field is measured with a 1.0 percent too-long chain is found to be 10,000 acres. The corrected area of the field will be

16. Direction of the closing error is given by

17. The optical square is based on the principle of

18. If the intercept on the vertical staff is observed as 1.5mm from a tacheometer, the horizontal distance between the tacheometer and staff station is

19. The size of the plane table is:

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

21. Fifteen readings were recorded in a level field book. If the instrument was shifted after the 5th, 10th, and 15th readings, then the foresight readings are

22. The designation of scale recommended by IS: 1491-1959 is

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

24. Working edge of alidade is called

25. The reduced level of the line of collimation is 50m, and the staff reading at the base of the pillar is 1.15 m. Find the reduced level of the base of the pillar

26. Find the length of curve if R=500 m, Intersection angle= 120°

27. Geodetic survey is different from plane surveying because of

28. *Which instrument is not used in plane table

29. The whole circle bearing 338°42" converted into quadrantal form is given as

30. In tacheometric survey, the method which provides easy reading of the staff is

31. For a line AB

32. In a closed traverse,

33. In the scale of a map is 1:25000, what does it mean:

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

35. A 20 cm theodolite means

36. *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

37. The angle that can be set by a French cross-staff is

38. The projection of a line on a plane perpendicular to the meridian is known as

39. The line normal to the plumb line is known as

40. Intersection is preferred to radiation when:

41. Chainage is the distance measured

42. Closed contours with higher value inside represent a

43. The method of offset laying involving minimum measurement on the ground is

44. The order of accuracy of the elevation of points obtained from a contour map is equal to

45. *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?

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

47. In leveling across a hill, the level should be set up on

48. An offset more than 15m in length is known as

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

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