Surveying Online Test – Paper 3

1. 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

2. If the observed reading of a level staff is 3.83m, and at the point sighted the staff is 0.15m off from the vertical through the bottom, the correct reading will be

3. For a station to be free from local attraction

4. The upper plate

5. Sensitivity of a level tube is expressed by

6. An operation for determining the relative elevations of different points on the surface of the earth is known as

7. If the length of a transition curve is such that the full super elevation is attained at the junction with the circular curve, the resultant curve is known as

8. Closed contours with higher value inside represent a

9. The magnetic bearing of a line is 60°, and the true bearing of the same line is 70°. Find the declination

10. Size of a theodolite is specified by

11. The shape of the vertical curve generally used is

12. The process of bringing the vertical circle to the right of the observer is called

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

14. It is more difficult to obtain good results while measuring the horizontal distance by the stepping method

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

16. In plane table instrument for horizontal & vertical measurement without chaining

17. An anallatic lens is a.... used to remove an additive constant in a tacheometer.

18. With the help of leveling, we measure

19. If Θ is the angle of the slope, L is the length of the slope, and H is the difference in elevation between the two ends of the link, then the slope correction will be

20. The angle of intersection of a curve is the angle between

21. The bearing of the traverse line is calculated by

22. "A curve of varying radius introduced between two branches of a compound curve is called

23. The spacing of cross-sections in the indirect method of contouring depends upon

24. The difference between the most probable value of a quantity and its observed value is

25. If a chain is found too short on testing, it can be adjusted by

26. If the level tube is out of adjustment by an angle e, when the telescope is rotated through 180°, it becomes

27. A contour map of the area is essential before proceeding with the construction of

28. Handles are connected to the link by

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

30. Which one of the following may not be classified as personal error

31. A bearing noted N45° E represents

32. For any point on the surface with a given inclination, the contour gradient possible is

33. The sensitivity of the bubble tube expressed in terms of the angular value of one division of the bubble is given by

34. Which one of the following is not a personal error?

35. Negative errors are caused in the chain when its length is

36. 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

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

38. Isogonic lines are

39. Direction of the closing error is given by

40. *The leveling of the instrument is done such that

41. If S is the value of one smallest division on the main scale, v is the value of one smallest division on the vernier, and n is the number of divisions on the vernier, then the least count is given by

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

43. The orientation of the table is done by

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

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

46. Normal tension is that pull which

47. The difference between the two bearings of the last line as observed at the first and the last station of a traverse is known as

48. 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

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

50. A building is an obstacle to