Surveying Online Test – Paper 3

1. Overturning of vehicles on a curve can be avoided by using

2. Tilting levels are used for

3. Secular variation is an important factor because

4. During leveling staff readings are taken 1.0, 0.8 & 0.6 from consecutive horizontal crosshairs, the staff intercept should be

5. If the staff is held vertical and the angle of elevation and depression are kept the same, then the horizontal distance between the instrument and staff station computed by observation will be

6. Permanent adjustment is carried out to

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

8. A traverse deflection angle is

9. Invar tapes are made of an alloy of

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

11. Offset angle taken in chain survey may be

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

13. A level tube is used to make the line of sight horizontal. It is filled with

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

15. Ranging is the process of

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

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

18. Normal tension is that pull which

19. Obstacle to ranging but not chaining is

20. If the level tube is out of adjustment by an angle e, when the telescope is rotated through 180°, it becomes

21. The surface perpendicular to the direction of gravity is

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

23. Instrumental error in leveling is an error due to

24. When several contours coincide, it indicates

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

26. Which of the following terms is not associated with leveling:

27. 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

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

29. The position of a point can be fixed more accurately by

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

31. Contour interval is proportional

32. *The two-peg method is used to check the parallelism between the

33. A series of closely spaced contour lines represent a

34. The contour lines are perpendicular to the

35. An internal focusing type of telescope is focused by the movement of

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

37. 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

38. Find the RL of the collimation line. If the RL of BM is 100 m & BS staff reading is 5.35 m

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

40. A curve consists of two areas of different radii bending in the same direction and lying on the same side of their common tangent and their centers being on the same side of the curve is known as a

41. Height of instrument method of leveling, as compared to the rise and fall method, is

42. Short offsets are measured with

43. Personal error in leveling occurs due to

44. A series of straight, parallel, and widely spaced contours on a map represent a

45. If the quadrantal bearing of a line is N 35° W, then the whole circle bearing is

46. 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

47. A straight line tangential to the longitudinal curve of the level tube at its center is known as

48. Find the length of curve if radius of curve

49. The upgrade road meets with the downgrade road, then the curve formed at the junction is called

50. *The line of collimation should be parallel to