Surveying Online Test – Paper 3

1. The three-point problem is concerned with:

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

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

4. *The line of collimation should be parallel to

5. The dip of the needle

6. In the intersection method of plane tabling, the number of stations needed to be set up is:

7. Dumpy level is used when

8. If the included angle is greater than 180°, the deflection angle is

9. 'SPIRE TEST' is used in the permanent adjustment of theodolite for

10. Distomats is a type of

11. Closed contours with higher value inside represent a

12. The purpose of triangulation in a chain survey is

13. During leveling staff readings are taken 1.0, 0.8 & 0.6 from consecutive horizontal crosshairs, the staff intercept should be

14. 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

15. Level surface is parallel to

16. If the focal length of the objective glass is 20cm, and the distance from the object glass to the trunnion axis is 12cm, the additive constant is

17. A level line is a

18. In a theodolite, staff readings for upper, middle, and lower crosshairs are 1.4, 0.9 & 0.4, respectively. If the height of the tower is 100m, then find the horizontal distance between the instrument station and the base of the tower

19. The process of turning the telescope about the vertical axis in a horizontal plane is known as

20. If the intercept on the vertical staff is observed as 1.5mm from a tacheometer, the horizontal distance between the tacheometer and staff station is

21. Ranging is the process of

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

23. Error in tacheometric surveying is due to

24. Horizontal equivalent of a uniform slope must be

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

26. An offset scale always has the zero mark at

27. An imaginary line lying through the surface of the ground, having a constant inclination to the horizontal, is known as

28. Which one is the simplest survey?

29. Butt rods are used for measuring

30. A Cadastral Map is a map having

31. In a tacheometer provided with an anallatic lens, the distance between the object glass and the vertical axis is 15 cm. The focal length of the objective is 15 cm, and that of the anallatic lens is 10 cm. Hence, the distance between the two lenses is

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

33. A leveling station is a point where:

34. Bench marks are fixed by

35. Invar tapes are made of an alloy of

36. The important points selected at the ends of the chain lines to command the boundaries of the survey are known as

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

38. Find the length of curve if radius of curve

39. The observed reading on a leveling staff was 3.525 m. If the staff was 0.125m off from the original ground level, what should be the correct reading?

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

41. The strength of fix' is poor when:

42. If the magnetic bearing of the sun at noon at a place in the southern hemisphere is 150°, the magnetic declination at that place is

43. In a double-line river, contours are

44. If the distance between two points A and B is 1km, the combined correction for curvature and refraction will be

45. The range of accuracy in measuring distance by EDM with respect to ODM is

46. Local attraction in compass surveying may be due to

47. The scale used to measure and to set out the angles is

48. The height of instrument method is

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

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