Surveying Online Test – Paper 3

1. A 20 cm theodolite means

2. Ranging is the process of

3. In compass surveying

4. Metallic tapes are made of

5. The maximum permissible difference allowed while taking down the fore bearing and back bearing of a line is

6. The benchmark of a station A is 500 m, and the back sight reading at the point A is 2 m & foresight reading of station B is 3 m. Find the RL of station B

7. The Bench Mark of a point is 400m. Backsight reading at the benchmark is 2.20, and the foresight reading of point A is 2.10. Find the RL of point A

8. The place where the reading is taken is known as

9. The difference between a level line and a horizontal line is that

10. Pick up the odd statement

11. In the whole circle system, the bearings are measured

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

13. Isogonic lines are

14. The maximum angular error in laying the direction is 3°; if this maximum displacement of the point on paper is the same for both sources of error, the accuracy in the offset measurement will be

15. In a dumpy level, the objective and eyepiece lenses are made of two or more small lenses to obtain

16. The size of the plane table is:

17. 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

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

19. The absence of chromatic aberration in a telescope is known as

20. The difference between the sum of the measured angles and the theoretical sum of the angles of a closed traverse is called the

21. The Philadelphia rod is a type of

22. The bearing of the traverse line is calculated by

23. In survey works, declination varies from time to time and place to place. The main important variation is

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

25. An internal focusing type of telescope is focused by the movement of

26. The theory of probability is applied to

27. The boundary of water of a still lake is

28. The magnification of a telescope lens depends upon

29. Distomats is a type of

30. The length of an Engineer's chain is

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

32. The curvature and refraction corrections applied to staff readings respectively are

33. *The correction for refraction is given by

34. 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

35. The rise and fall method of leveling provides a complete check on

36. Error in tacheometric surveying is due to

37. In a closed traverse,

38. 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

39. Find the length of curve if radius of curve

40. The number of links in a 30 m metric chain is

41. *The method of leveling used to carry out the reconnaissance of an area is

42. An invert is taken when the point is

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

44. Dumpy level is used when

45. Normal tension is that pull which

46. A disadvantage of plane table survey is:

47. Contour lines look to cross each other in the case of

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

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

50. Working edge of alidade is called