Surveying Online Test – Paper 3

1. 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

2. An instrumental error in compass survey is because

3. 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

4. The contour interval depends upon

5. 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

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

7. If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for:

8. The types of survey used to fix property lines are

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

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

11. An imaginary line connecting the points of equal elevation on the ground surface is known as

12. Under Survey, "working from whole to part" is done

13. Find the length of curve if the radius of the curve is 50 m, and the angle of deflection is 60°

14. Automatic level has advantages of

15. 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

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

17. The permissible limits of error in chaining for measurement on rough or hilly ground are

18. The direct method of contouring is

19. The boundary of water of a still lake is

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

21. Level surface is parallel to

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

23. The principle of surveying to prevent the accumulation of errors is

24. 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

25. The closing error is given by

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

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

28. A level line is a

29. In leveling, the station where the back sight and foresight readings are taken is known as

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

31. In a closed traverse by included angles, the sum of measured interior angles should be equal to

32. Offset angle taken in chain survey may be

33. The reciprocal leveling eliminates

34. The two-point problem is:

35. Find the length of curve if radius of curve

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

37. The method of tacheometry in which the observation is made with stadia wires with a variable interval is known as

38. The purpose of triangulation in a chain survey is

39. For the route survey of a contour map, the method used is

40. Contour lines

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

42. A bearing noted N45° E represents

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

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

45. The telescope is said to be normal when the

46. When several contours coincide, it indicates

47. Instrumental error in leveling is an error due to

48. The limiting length of an offset does not depend upon

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

50. Right face and left face readings are taken to