Surveying Online Test – Paper 3

1. 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

2. The elevation (BM) of point A is 100 m. Backsight reading at A is 20, and foresight reading at B is 30 m. Find the RL of point B

3. The chain length which is not the standard metric chain length is

4. The device used in computing the horizontal and vertical distances rapidly and conveniently is

5. If the sum of northing of a traverse exceeds the sum of southing by 2m and the sum of easting exceeds the sum of westing by 2m, the resulting closing error will be

6. The "point of the curve" of a simple circular curve is

7. "Cross-sectioning" and "Longitudinal sectioning" is

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

9. The tacheometric method is a more suitable method for preparing the contour map of

10. Magnetic declination

11. The sensitivity of the bubble tube can be increased by

12. A bearing noted N45° E represents

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

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

15. The representation of general topography of a very flat terrain is possible only

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

17. A 20 cm theodolite means

18. The contour lines are perpendicular to the

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

20. The reciprocal leveling eliminates

21. Chain surveying is used for a small area in

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

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

24. You are requested to carry out a survey for the construction of a small airport in a mountainous region of Nepal. Which of the following surveying method will you choose?

25. The multiplying constant of a tacheometer is

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

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

28. Tellurometer uses

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

30. A disadvantage of plane table survey is:

31. In tacheometric survey, the method which provides easy reading of the staff is

32. Tacheometry is best suited

33. An example of a level surface is

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

35. When the whole circle bearing of two lines AB and AC are 115° and 41° respectively, then the included angle BAC will be:

36. Ranging is the process of

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

38. A diagonal eyepiece is provided with a

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

40. The needle is adjusted for

41. Leveling across a river is done by

42. The strength of fix' is poor when:

43. In trigonometrical leveling, the combined correction is given by (where m=coefficient of refraction)

44. A benchmark (BM) is a

45. The image of the objectives formed should lie

46. The survey which is carried out to determine absolute locations and the direction of any line on the surface of the earth by making observations of heavenly bodies is called

47. Which one is the simplest survey?

48. 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

49. 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

50. The three-point problem is concerned with: