Surveying Online Test – Paper 3

1. Parallax may be eliminated by

2. Different grades are joined together by a

3. The curvature and refraction corrections applied to staff readings respectively are

4. The magnetic north is indicated by

5. The place where the reading is taken is known as

6. The maximum angular error in laying the direction is 3°; if this maximum displacement of the point on paper is the same for both sources of error, the accuracy in the offset measurement will be

7. The horizontal distances obtained by tacheometry are corrected for

8. The inclination of the needle to the horizontal towards the pole is called

9. The levels to which the earthwork will have to be carried out is known as

10. Secular variation is an important factor because

11. In the case of a telescopic alidade, the adjustment done is

12. An invert is taken when the point is

13. Natural error in leveling is caused due to

14. Bench marks are fixed by

15. The minimum horizontal distance between any two consecutive contours is known as

16. Choose the correct statement:

17. Diurnal variation depends upon

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

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

20. The fundamental lines of transit of the theodolite are

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

22. For accurate work, in comparison to the chain, the steel band is used because it

23. A level tube is used to make the line of sight horizontal. It is filled with

24. Sensitivity of a level tube is expressed by

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

26. A diagonal eyepiece is provided with a

27. The projection of a line on a plane parallel to the meridian is known as

28. For Y level, Cooke's, and Cushing levels, the line of collimation should coincide with

29. A transition curve introduced between the tangent and the circular curve should

30. 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

31. The location of the contour gradient for a highway is best set out from

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

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

34. The rise and fall method

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

36. When several contours coincide, it indicates

37. Area of triangle joining three corner points in comparison to the circle same three points:

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

39. *Accuracy of 'fix' by two-point problem is

40. A traverse deflection angle is

41. The type of survey in which horizontal and vertical distance is measured

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

43. The longitudinal section of the surface of the bubble tube is

44. The limiting length of an offset does not depend upon

45. The stadia hairs are not used in

46. A leveling station is a point where:

47. If n observations are taken, the accidental errors are proportional to

48. When the whole circle bearing of two lines AB and AC are 115° and 41° respectively, then the included angle BAC will be:

49. The scale used to measure and to set out the angles is

50. 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