Surveying Online Test – Paper 3

1. An example of a level surface is

2. Short offsets are measured with

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

4. An invert is taken when the point is

5. The area of the earth's surface is taken into account only if the extent of the survey is more than

6. Tellurometer uses

7. Boning rod is used

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

9. *Due to the curvature of the earth, objects look

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

11. Theodolite traverse is plotted more accurately by

12. A discrepancy is the difference between

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

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

15. Well-conditioned triangle having an angle between

16. The Normal chord of a curve should be

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

18. Limiting the length of offset depends upon

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

20. The instrument used to reproduce plans to a different scale is called

21. An imaginary line lying through the surface of the ground, having a constant inclination to the horizontal, is known as

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

23. The spacing of cross-sections in the indirect method of contouring depends upon

24. 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

25. For the construction of a highway railway

26. The types of survey in which fieldwork and plotting proceed simultaneously are:

27. A traverse deflection angle is

28. When a chain line encounters a river:

29. 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

30. Instrumental error in leveling is an error due to

31. In a double-line river, contours are

32. In a survey, it was recorded that Σrise = 0, then

33. The projection of a line on a plane parallel to the meridian is known as

34. Theodolite is an instrument used for measuring

35. If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as

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

37. The Q.B of the lines are given by...., ...., & ..... If W.C.B. of the lines are 0°, 135°, 270° respectively

38. An instrumental error in compass survey is because

39. The telescope is said to be normal when the

40. Methods adopted for traversing are

41. The function of the leveling head is

42. Hydrographic survey deals with the mapping of

43. A series of closed contour lines on the map with higher to lower values inside them represent a

44. If the needle of the compass is sluggish the type of error will be

45. 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

46. Compensator is used to make the line of sight perpendicular to the vertical axis in the case of

47. Metallic tapes are made of

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

49. For a station to be free from local attraction

50. Area of triangle joining three corner points in comparison to the circle same three points: