Surveying Online Test – Paper 3

1. The longest chain line passing through the center of the area is known as

2. Contour interval is proportional

3. The instrument used for measuring area on a contour map is

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

5. Offset angle taken in chain survey may be

6. The purpose of triangulation in a chain survey is

7. The reciprocal leveling eliminates

8. Choose the correct statement:

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

10. Tacheometry is best suited

11. *The line of collimation should be parallel to

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

13. The triangle formed by joining the position of the known points on plane table survey is known as:

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

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

16. It is more difficult to obtain good results while measuring the horizontal distance by the stepping method

17. Which one of the following may not be classified as a natural error?

18. The W.C.B of a line is preferred to a quadrantal bearing merely because

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

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

21. The amount of correction due to local attraction at a place

22. The closing error is given by

23. A chain 33 feet long and consisting of 16 links each 2(1/16) feet long is

24. In a theodolite, the line passing through the intersection of the horizontal and vertical crosshairs and the optical center of the object glass and its continuation is known as

25. Two contour lines, having the same elevation

26. *Error due to imperfect adjustment of plate level is termed as

27. If a chain is found too short on testing, it can be adjusted by

28. The Philadelphia rod is a type of

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

30. The surface perpendicular to the direction of gravity is

31. Find the length of curve if radius of curve

32. In a closed traverse, the closing error should not be more than (where N is the no. of sides of the traverse)

33. The trunion axis or transverse axis is

34. Sensitivity of a level tube is expressed by

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

36. Dumpy level is used when

37. Compensating errors in chaining or other surveys are

38. The bearing of line AB is 200° and that of BC is 270°, the included angle ABC is

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

40. The sag correction is always

41. In a closed traverse,

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

43. "Fiducial edge" is the working edge of

44. A traverse deflection angle is

45. The contour interval depends upon

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

47. A chain is made up of mild steel or galvanized iron wire of diameter

48. An offset scale always has the zero mark at

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

50. Angle of 45° with the chain line may be set out with