Surveying Online Test – Paper 3

1. A field is measured with a 1.0 percent too-long chain is found to be 10,000 acres. The corrected area of the field will be

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

3. The orientation of the table is done by

4. Find the contour interval for the map, 1: 25000 in IS & FPS

5. The amount of correction due to local attraction at a place

6. If the included angle is greater than 180°, the deflection angle is

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

8. The last reading of leveling is always at

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

10. For a station to be free from local attraction

11. If the station A and B are equally affected and in the different direction, then the difference between the forebearing and back bearing of a line AB should be

12. The main difference between an optical square and a prism square is

13. 'SPIRE TEST' is used in the permanent adjustment of theodolite for

14. If the sights are vertical

15. Butt rods are used for measuring

16. The sag correction is always

17. Theodolite traverse is plotted more accurately by

18. The function of the leveling head is

19. In a theodolite, the line passing through the intersection of the horizontal and vertical crosshairs and the optical center of the object glass and its continuation is known as

20. A bearing noted N45° E represents

21. In a tacheometer provided with an anallatic lens, the distance between the object glass and the vertical axis is 15 cm. The focal length of the objective is 15 cm, and that of the anallatic lens is 10 cm. Hence, the distance between the two lenses is

22. If the staff is held vertical and the angle of elevation and depression are kept the same, then the horizontal distance between the instrument and staff station computed by observation will be

23. With the help of leveling, we measure

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

25. Handles are connected to the link by

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

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

28. The order of accuracy of the elevation of points obtained from a contour map is equal to

29. The spacing of cross-sections in the indirect method of contouring depends upon

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

31. If S is the value of one smallest division on the main scale, v is the value of one smallest division on the vernier, and n is the number of divisions on the vernier, then the least count is given by

32. The device used in computing the horizontal and vertical distances rapidly and conveniently is

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

34. The trunion axis or transverse axis is

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

36. The surface perpendicular to the direction of gravity is

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

38. Well-conditioned triangle having an angle between

39. Setting up the plane table consists of operations:

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

41. Distomats is a type of

42. Positive error is caused if

43. If the needle is truly magnetic and is not sluggish

44. The advantage of anallatic lens is

45. The intercept of a staff is

46. The multiplying constant of a tacheometer is

47. The difference between the sum of the measured angles and the theoretical sum of the angles of a closed traverse is called the

48. If the bearing of AB is N 30° W and the bearing of BC is N 40° E, then find the angle < ABC

49. Local attraction in compass surveying may be due to

50. The horizontal distances obtained by tacheometry are corrected for