Surveying Online Test – Paper 3

1. Dumpy level is used when

2. Two contour lines, having the same elevation

3. Normal tension is that pull which

4. Chainage is the distance measured

5. The stadia hairs are not used in

6. The central angle subtended by an arc of 30m of the curve

7. The principle of surveying to prevent the accumulation of errors is

8. Limiting the length of offset depends upon

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

10. Butt rods are used for measuring

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

12. The range of accuracy in measuring distance by EDM with respect to ODM is

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

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

15. *The method of leveling used to carry out the reconnaissance of an area is

16. The dip of the needle

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

18. The position of a point can be fixed more accurately by

19. In a closed traverse by included angles, the sum of measured interior angles should be equal to

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

21. The instrument used to reproduce plans to a different scale is called

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

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

24. Error in tacheometric surveying is due to

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

26. 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

27. The smaller angle which a survey line makes with the true meridian is known as

28. In a closed traverse, the algebraic sum of deflection angles is

29. For a line AB

30. The image of the objectives formed should lie

31. In trigonometrical leveling, the combined correction is given by (where m=coefficient of refraction)

32. The magnetic declination at a place is 7°20' W, the bearing given by the compass is S45°40'E, the true bearing of the place is

33. *The observed reading on a leveling staff was 3.545 m. If the staff was 0.150m off from the original ground level, what should be the correct reading?

34. Right face and left face readings are taken to

35. A chain 33 feet long and consisting of 16 links each 2(1/16) feet long is

36. In an internal focusing type of telescope, the negative lens provided is

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

38. The angle which the true meridian makes with the magnetic meridian is called

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

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

41. The errors due to bad ranging are

42. The triangle formed by joining the position of the known points on plane table survey is known as:

43. The bearing of the traverse line is calculated by

44. The contour lines are perpendicular to the

45. Local attraction at a place may be due to

46. A curve consists of two areas of different radii bending in the same direction and lying on the same side of their common tangent and their centers being on the same side of the curve is known as a

47. An offset more than 15m in length is known as

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

49. A 30 m long chain when tested should not show errors exceeding

50. A contour map of the area is essential before proceeding with the construction of