Surveying Online Test – Paper 3

1. The effect of local attraction is observed in

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

3. Setting up the plane table consists of operations:

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

5. The graduations in a prismatic compass are

6. Intersection is preferred to radiation when:

7. An imaginary line lying through the surface of the ground, having a constant inclination to the horizontal, is known as

8. The telescope is said to be normal when the

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

10. Instrumental error in leveling is an error due to

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

12. *Accuracy of 'fix' by two-point problem is

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

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

15. A benchmark (BM) is a

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

17. Dumpy level is used when

18. Working edge of alidade is called

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

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

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

22. *Total station measures

23. With the help of leveling, we measure

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

25. The bearing of line AB is 200° and that of BC is 270°, the included angle ABC is

26. Least count is given by

27. Plane table survey is considered good as compared to other surveys since:

28. A series of closely spaced contour lines represent a

29. Revolving of the telescope of a theodolite in a horizontal plane is

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

31. The RL of the benchmark is 1000.0 m, and the back sight reading at the benchmark is 2.555 m. Find the staff reading of IS if the RL of IS is 1000.055 m

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

33. A bearing noted N45° E represents

34. *Total station is

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

36. *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?

37. In the scale of a map is 1:25000, what does it mean:

38. 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

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

40. The length of an Engineer's chain is

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

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

43. The intercept of a staff is

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

45. 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

46. The multiplying constant of a tacheometer is

47. The triangle formed by joining the position of the known points on plane table survey is known as:

48. The longest chain line passing through the center of the area is known as

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

50. The most probable value of an observed quantity available from a given set of observations is the one for which the sum of the square of errors is a minimum. This statement is called