Surveying Online Test – Paper 3

1. A traverse consists of six sides; then the sum of external angles must be

2. The main difference between an optical square and a prism square is

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

4. A scale representing either three units or only one unit and its fractions up to the second place of the decimal point is

5. In a traverse, the algebraic sum of the deflection angles, taking the right-hand deflection angles as positive and left-hand deflection as negative, should be equal to

6. Theodolite is an instrument used for measuring

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

8. The smaller angle which a survey line makes with the true meridian is known as

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

10. Local attraction in compass surveying may be due to

11. A series of closely spaced contour lines represent a

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

13. A discrepancy is the difference between

14. Permanent adjustment is carried out to

15. In a double-line river, contours are

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

17. Which one is the simplest survey?

18. The trunion axis or transverse axis is

19. The fundamental lines of transit of the theodolite are

20. The types of instrument generally used in the survey of gravity water supply system are:

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

22. The image of the objectives formed should lie

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

24. Geodetic survey is different from plane surveying because of

25. The type of survey in which horizontal and vertical distance is measured

26. If n observations are taken, the accidental errors are proportional to

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

28. The magnetic declination at a place is 7°20' W, the bearing given by the compass is S45°40'E, the true bearing of the place is

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

30. Least count is given by

31. 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

32. An example of a level surface is

33. 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

34. The graduations in a prismatic compass are

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

36. The error eliminated by taking the mean of both face observations is

37. Size of a theodolite is specified by

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

39. The foremost work to be executed while traversing with a compass is

40. The direct method of contouring is

41. The outer spindle attached to the lower plate in a transit theodolite is known as

42. The contour lines are perpendicular to the

43. Level surface is parallel to

44. 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

45. In an internal focusing type of telescope, the negative lens provided is

46. For accurate work, in comparison to the chain, the steel band is used because it

47. Positive error is caused if

48. If the formation level is less than the ground level, the difference between them at any point will give the

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

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