Surveying Online Test – Paper 3

1. 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

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

3. *The correction for refraction is given by

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

5. In a closed traverse,

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

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

8. The types of instrument generally used in the survey of gravity water supply system are:

9. A poor fix of the table is:

10. Level surface is parallel to

11. Contour interval, within the limits of a map

12. A negative declination shows the magnetic meridian to the

13. The direct method of contouring is

14. Short offsets are measured with

15. A discrepancy is the difference between

16. 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

17. *When it is not possible to set up the level, midway between the two points, then the difference in elevation between them is measured by

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

19. A bearing noted N45° E represents

20. Offsets are

21. 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

22. The chord of curve less than peg interval is known as

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

24. The elevation (BM) of point A is 100 m. Backsight reading at A is 20, and foresight reading at B is 30 m. Find the RL of point B

25. Parallax may be eliminated by

26. Butt rods are used for measuring

27. Diurnal variation depends upon

28. 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

29. The errors due to bad ranging are

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

31. The image of the objectives formed should lie

32. If the magnetic declination is (-)6°0' and the reduced bearing of a line is S40°01'E, the true bearing of the line is

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

34. The stadia hairs are not used in

35. Any arbitrarily assumed level line from which vertical distances are measured is known as

36. In profile leveling, staff readings on two neighboring pegs 20m apart are 1.200 and 1.00, respectively. Therefore, the proposed road has a

37. The contour line can cross one another on a map only in the case of

38. Tellurometer uses

39. The size of the plane table is:

40. The perpendicular distance of the midpoint of the line from the reference meridian is known as

41. If the included angle is less than 180°, the deflection angle is

42. A straight line tangential to the longitudinal curve of the level tube at its center is known as

43. The rise and fall method

44. Which one is wrong?

45. A diagonal eyepiece is provided with a

46. 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

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

48. Overturning of vehicles on a curve can be avoided by using

49. Find the RL of the collimation line. If the RL of BM is 100 m & BS staff reading is 5.35 m

50. With the help of leveling, we measure