Surveying Online Test – Paper 3

1. The intercept of a staff is

2. The location of the contour gradient for a highway is best set out from

3. *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

4. Cubic parabola is a type of

5. The number of horizontal cross wires in a stadia diaphragm is

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

7. The levels to which the earthwork will have to be carried out is known as

8. The included angles of the theodolite traverse are generally measured

9. Hydrographic survey deals with the mapping of

10. 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

11. In a closed traverse, the algebraic sum of deflection angles is

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

13. The prismatic compass and the surveyor's compass respectively give

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

15. Sensitivity of a level tube is expressed by

16. The sag correction is always

17. The optical square is based on the principle of

18. For a station to be free from local attraction

19. The image of the objectives formed should lie

20. 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

21. A 20 cm theodolite means

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

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

24. An invert is taken when the point is

25. The angle of intersection of the horizon mirror and the index mirror of an optical square is

26. 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?

27. Tilting levels are used for

28. Axis method of traverse correction is used when

29. The central angle subtended by an arc of 30m of the curve

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

31. The number of links in a 30 m metric chain is

32. The angle which the true meridian makes with the magnetic meridian is called

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

34. Well-conditioned triangle having an angle between

35. Which one is wrong?

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

37. The tie line is run through the survey to

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

39. True meridians

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

41. The direct method of contouring is

42. A staff reading taken on a benchmark/ known elevation or change point is known as

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

44. 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

45. The bearing of the traverse line is calculated by

46. An example of a level surface is

47. In a constant level tube, the size of the bubble remains constant because the upper wall of the tube has

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

49. Diurnal variation depends upon

50. If the image formed by the objective of the telescope is not in the plane of crosshairs, it is called