Surveying Online Test – Paper 3

1. The W.C.B of a line is preferred to a quadrantal bearing merely because

2. Compensator is used to make the line of sight perpendicular to the vertical axis in the case of

3. Ten readings were recorded in a level field book. If the instrument was shifted after the 2nd and 6th readings, then the foresight readings are

4. In leveling across a hill, the level should be set up on

5. The intercept of a staff is

6. Tacheometry is best suited

7. The reciprocal leveling eliminates

8. Chainage is the distance measured

9. Which of the following instruments is generally used for baseline measurements?

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

11. Contours are used to determine

12. Magnetic declination

13. A series of closed contour lines on the map with higher to lower values inside them represent a

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

15. For the route survey of a contour map, the method used is

16. Natural error in leveling is caused due to

17. The central angle subtended by an arc of 30m of the curve

18. The strength of the fix of a plane table is:

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

20. Which one is the simplest survey?

21. "Fiducial edge" is the working edge of

22. 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

23. Chain surveying is used for a small area in

24. The telescope is said to be normal when the

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

26. Azimuth and altitude of a star

27. The outer spindle attached to the lower plate in a transit theodolite is known as

28. Contour interval, within the limits of a map

29. The accuracy required in precise leveling is of the order of (Where K is the total distance of the level line in KM)

30. The method of tacheometry in which the observation is made with stadia wires with a variable interval is known as

31. The quadrantal bearing of a line is determined by:

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

33. The observed reading on a leveling staff was 3.525 m. If the staff was 0.125m off from the original ground level, what should be the correct reading?

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

35. In a double-line river, contours are

36. The best method of interpolation of contours in the direct method of contouring is by

37. The closing error is given by

38. The angle of intersection of the horizon mirror and the index mirror of an optical square is

39. Height of instrument method of leveling, as compared to the rise and fall method, is

40. Invar tapes are made of an alloy of

41. When the following scale is the smallest one

42. In chain survey execution, this first step taken is

43. When several contours coincide, it indicates

44. The instrument used for measuring area on a contour map is

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

46. Chain surveying is used for

47. The principle of surveying to prevent the accumulation of errors is

48. For a line AB

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

50. When the angular and linear measurements are equally precise in traversing, the balancing of the traverse is done by: