Surveying Online Test – Paper 3

1. 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

2. In normal condition, the difference of fore and back bearing should be?

3. Resection is the method employed for:

4. A Cadastral Map is a map having

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

6. Find the length of curve if R=500 m, Intersection angle= 120°

7. Bowditch's rule is applied to

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

9. A staff reading taken on a benchmark/ known elevation or change point is known as

10. Tellurometer uses

11. The rise and fall method

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

13. Bench marks are fixed by

14. Subtense bar is an instrument used for the measurement of horizontal distance in

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

16. Area of triangle joining three corner points in comparison to the circle same three points:

17. Parallax may be eliminated by

18. For a line AB

19. An anallatic lens is provided in a tacheometer to measure the horizontal distance.

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

21. If n observations are taken, the accidental errors are proportional to

22. Dumpy level is used when

23. Sensitivity of a level tube is expressed by

24. In trigonometrical leveling, the combined correction is given by (where m=coefficient of refraction)

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

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

27. Instrumental error in leveling is an error due to

28. Angular surveying in which both the horizontal and vertical positions of a point are obtained by optical means is known as

29. *The two-peg method is used to check the parallelism between the

30. The magnetic north is indicated by

31. Prolongation of a chain line across an obstruction in chain surveying is done by

32. The method of tacheometry in which the stadia hair intercept is fixed is known as

33. If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as

34. Find the R.F. of 1cm = 5m

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

36. The main difference between an optical square and a prism square is

37. *The observed reading on a leveling staff was 3.545 m. If the staff was 0.150m off from the original ground level, what should be the correct reading?

38. Theodolite traverse is plotted more accurately by

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

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

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

42. The spacing of crosshairs in a stadia diaphragm of a tacheometer is 1.5mm, and the focal length of the objective glass is 30cm, the multiplying constant of the tacheometer is

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

44. The theory of probability is applied to

45. While measuring horizontal distance by stepping method we should follow

46. The correction for curvature as applied to staff reading is

47. In a double-line river, contours are

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

49. The needle is adjusted for

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