Surveying Online Test – Paper 3

1. If the magnetic bearing of a line is 65° and the true bearing 45°, then the magnetic declination is

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

3. A 30 m long tape was standardized at a temperature of 30°C; at the time of measurement, the temperature recorded was 35°C. Then the correction for temperature per tape length is (coefficient of thermal expansion = 0.0001116/°C)

4. A traverse survey can be plotted

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

6. A diagonal eyepiece is provided with a

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

8. Different grades are joined together by a

9. In leveling, the station where the back sight and foresight readings are taken is known as

10. A traverse deflection angle is

11. During leveling staff readings are taken 1.0, 0.8 & 0.6 from consecutive horizontal crosshairs, the staff intercept should be

12. The Q.B of the lines are given by...., ...., & ..... If W.C.B. of the lines are 0°, 135°, 270° respectively

13. The size of the plane table is:

14. Automatic level has advantages of

15. A 20 cm theodolite means

16. Axis method of traverse correction is used when

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

18. Local attraction at a place may be due to

19. Secular variation is an important factor because

20. Crosshairs in a surveying telescope are fitted

21. The angle that can be set by a French cross-staff is

22. The optical square is based on the principle of

23. The whole circle bearing 338°42" converted into quadrantal form is given as

24. A river is an obstacle to

25. The foremost work to be executed while traversing with a compass is

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

27. Indirect ranging method is adopted when two points of the chain line are:

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

29. The main difference between theodolite and level is:

30. The sag correction is always

31. If the magnetic bearing of the sun at noon at a place in the southern hemisphere is 150°, the magnetic declination at that place is

32. The Bench Mark of a point is 400m. Backsight reading at the benchmark is 2.20, and the foresight reading of point A is 2.10. Find the RL of point A

33. Metallic tapes are made of

34. Normal tension is that pull which

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

36. Contours are used to determine

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

38. The function of the leveling head is

39. Leveling across a river is done by

40. The method of plane tabling generally adopted to obtain details and plotting inaccessible points is:

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

42. Plane table surveying is a graphical method of surveying in which:

43. Personal error in leveling occurs due to

44. Invar tapes are made of an alloy of

45. 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

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

47. The orientation of the table is done by

48. If a chain is found too short on testing, it can be adjusted by

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

50. The errors due to bad ranging are