Surveying Online Test – Paper 3

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

2. 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

3. Secular variation is an important factor because

4. The imaginary line passing through the intersection of crosshairs and the optical center of the object is known as:

5. The distance between terminal points computed from a subsidiary traverse run between them is known as

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

7. A building is an obstacle to

8. Actually, which is not the method of plane tabling?

9. *Due to the curvature of the earth, objects look

10. In a theodolite, staff readings for upper, middle, and lower crosshairs are 1.4, 0.9 & 0.4, respectively. If the height of the tower is 100m, then find the horizontal distance between the instrument station and the base of the tower

11. A traverse survey can be plotted

12. 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

13. In a constant level tube, the size of the bubble remains constant because the upper wall of the tube has

14. The types of leveling used for Geodetic survey is

15. The instrument used for centering the plane table accurately is:

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

17. Azimuth and altitude of a star

18. Error in tacheometric surveying is due to

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

20. Angle of 45° with the chain line may be set out with

21. *For the construction of highway/railway

22. 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

23. The three-point problem is concerned with:

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

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

26. A Cadastral Map is a map having

27. Distomats is a type of

28. The method most suitable for plotting in hilly areas is:

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

30. The stadia hairs are not used in

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

32. The vertical distance between any two consecutive contours is known as

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

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

35. If the sum of northing of a traverse exceeds the sum of southing by 2m and the sum of easting exceeds the sum of westing by 2m, the resulting closing error will be

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

37. A chain is made up of mild steel or galvanized iron wire of diameter

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

39. Contour interval, within the limits of a map

40. Which one of the following may not be classified as a natural error?

41. 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

42. When several contours coincide, it indicates

43. A benchmark (BM) is a

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

45. Level surface is parallel to

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

47. The method of offset laying involving minimum measurement on the ground is

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

49. 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

50. If the quadrantal bearing of a line is N 35° W, then the whole circle bearing is