Surveying Online Test – Paper 3

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

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

3. An offset more than 15m in length is known as

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

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

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

7. The closing error is given by

8. The accuracy of measurement in chain surveying does not depend upon

9. In a theodolite, the line passing through the intersection of the horizontal and vertical crosshairs and the optical center of the object glass and its continuation is known as

10. The surface of zero elevation around the earth, which is slightly irregular and curved, is known as

11. The method of plane tabling generally adopted to obtain details and plotting inaccessible points is:

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

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

14. The instrument used for measuring area on a contour map is

15. A chain 33 feet long and consisting of 16 links each 2(1/16) feet long is

16. Sensitivity of a level tube is expressed by

17. When the following scale is the smallest one

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

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

20. When a chain line encounters a river:

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

22. The angular and linear measurement of the part of the traverse can be checked by

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

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

25. The boundary of water of a still lake is

26. Least count is given by

27. The best method of interpolation of contours in the direct method of contouring is by

28. The effect of local attraction is observed in

29. A curve consists of two areas of different radii bending in the same direction and lying on the same side of their common tangent and their centers being on the same side of the curve is known as a

30. The instrument used for centering the plane table accurately is:

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

32. In the case of leveling staff readings are taken by (In the case of target staff)

33. The size of the plane table is:

34. Permanent adjustment is carried out to

35. Staff intercept means

36. A 30 m long chain when tested should not show errors exceeding

37. In the direct method of contouring, the process of locating points lying on a contour is known as

38. The graduations in a prismatic compass are

39. The contour lines are perpendicular to the

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

41. Normal tension is that pull which

42. The instrument used to reproduce plans to a different scale is called

43. The whole circle bearing 338°42" converted into quadrantal form is given as

44. The needle is adjusted for

45. The fundamental lines of transit of the theodolite are

46. 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

47. The contour interval depends upon

48. The method of leveling in which the plane table is set at only one station to take detail is known as:

49. Contour lines

50. 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