Surveying Online Test – Paper 3

1. The difference between the sum of the measured angles and the theoretical sum of the angles of a closed traverse is called the

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

3. The shape of the vertical curve generally used is

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

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

6. The absence of spherical aberration in a telescope is known as

7. The quadrantal system confines the user to measure the bearings from

8. The horizontal distances obtained by tacheometry are corrected for

9. *The instrument used to measure horizontal and vertical angle is

10. Plane table surveying is a graphical method of surveying in which:

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

12. 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

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

14. Open cross-staff is commonly used for setting out

15. Natural error in leveling is caused due to

16. An offset scale always has the zero mark at

17. The stadia hairs are not used in

18. A relatively fixed point of known elevation above the datum is called

19. The orientation of the table is done by

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

21. Contour interval, within the limits of a map

22. Secular variation is an important factor because

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

24. The graduations in a prismatic compass are

25. A 30m chain was found to be 20cm too long after chaining 1500m. The correct length of the total distance chained will be

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

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

28. *The line of collimation should be parallel to

29. If Θ is the angle of the slope, L is the length of the slope, and H is the difference in elevation between the two ends of the link, then the slope correction will be

30. In a dumpy level, the objective and eyepiece lenses are made of two or more small lenses to obtain

31. The Bench Mark of a point is 400m. Backsight reading at the benchmark is 2.20, and the foresight reading of point A is 2.10. Find the RL of point A

32. The resection by a two-point problem as compared to the three-point problem:

33. The process of turning the telescope about the horizontal axis in a vertical plane by a complete revolution is known as

34. A discrepancy is the difference between

35. *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

36. The method most suitable for plotting in hilly areas is:

37. Tacheometry is best suited

38. Contours are used to determine

39. The image of the objectives formed should lie

40. The contour lines are perpendicular to the

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

42. A contour map of the area is essential before proceeding with the construction of

43. The intercept of a staff is

44. Direct distance measurement method is more suitable to measure in

45. The true bearing of a line can be calculated as (Where the declination is to the east.)

46. The imaginary line passing through the intersection of crosshairs and the optical center of the object is known as:

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

48. The bearing of the traverse line is calculated by

49. Working edge of alidade is called

50. The quadrantal bearing of a line is determined by: