Surveying Online Test – Paper 3

1. The magnification of a telescope lens depends upon

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

3. The sag correction is always

4. The errors due to bad ranging are

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

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

8. A 30 m long tape was standardized at a temperature of 30°C; at the time of measurement, the temperature recorded was 35°C. Then the correction for temperature per tape length is (coefficient of thermal expansion = 0.0001116/°C)

9. The angular error of closure or summation error should not exceed (Where N is the number of stations or sides.)

10. Positive error is caused if

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

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

13. Local attraction in compass surveying may be due to

14. A series of closely spaced contour lines represent a

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

16. Find the contour interval for the map, 1: 25000 in IS & FPS

17. The three-point problem can be solved by:

18. The theory of probability is applied to

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

20. Intersection is preferred to radiation when:

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

22. With the help of leveling, we measure

23. The surface perpendicular to the direction of gravity is

24. If the needle is truly magnetic and is not sluggish

25. Sensitivity of a level tube is expressed by

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

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

28. Height of the instrument is equal to:

29. The maximum permissible difference allowed while taking down the fore bearing and back bearing of a line is

30. Isogonic lines are

31. Staff intercept means

32. Obstacle to ranging but not chaining is

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

34. The limiting length of an offset does not depend upon

35. A traverse deflection angle is

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

37. 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

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

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

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

41. Methods adopted for traversing are

42. 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

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

44. Angular surveying in which both the horizontal and vertical positions of a point are obtained by optical means is known as

45. Distomats is a type of

46. The types of leveling used for Geodetic survey is

47. A building is an obstacle to

48. Offsets are

49. Contour interval is proportional

50. When the following scale is the smallest one