Surveying Online Test – Paper 3

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

2. A disadvantage of plane table survey is:

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

4. Contour lines look to cross each other in the case of

5. The magnetic bearing of a line is 60°, and the true bearing of the same line is 70°. Find the declination

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

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

8. Contour interval, within the limits of a map

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

10. The horizontal distances obtained by tacheometry are corrected for

11. The direction of the steepest slope on a contour is

12. The stadia hairs are not used in

13. Tellurometer uses

14. A Cadastral Map is a map having

15. The optical square is based on the principle of

16. With the help of leveling, we measure

17. An example of a level surface is

18. The telescope is said to be normal when the

19. Negative errors are caused in the chain when its length is

20. Boning rod is used

21. The angular error of closure or summation error should not exceed (Where N is the number of stations or sides.)

22. Which one is wrong?

23. The two-point problem as compared to the three-point problem is:

24. Crosshairs in a surveying telescope are fitted

25. A benchmark (BM) is a

26. Contour lines of different elevations can unite to form one line only in the case of

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

28. The closing error is given by

29. To orient a plane table without two inaccessible points, the method generally adopted is:

30. The purpose of triangulation in a chain survey is

31. Find the length of curve if the radius of the curve is 50 m, and the angle of deflection is 60°

32. The projection of a line on a plane perpendicular to the meridian is known as

33. 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

34. 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

35. In survey, it was recorded that Σfall = 0 then

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

37. If the formation level is less than the ground level, the difference between them at any point will give the

38. A poor fix of the table is:

39. The maximum allowable limit up to which a measurement may vary from the true value is known as

40. Subtense bar is an instrument used for the measurement of horizontal distance in

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

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

43. Azimuth and altitude of a star

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

45. Chain surveying is used for

46. An instrumental error in compass survey is because

47. An operation for determining the relative elevations of different points on the surface of the earth is known as

48. In a survey, it was recorded that Σrise = 0, then

49. The intercept of a staff is

50. A diagonal eyepiece is provided with a