Surveying Online Test – Paper 3

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

2. A relatively fixed point of known elevation above the datum is called

3. A level line is a

4. Direct distance measurement method is more suitable to measure in

5. The last reading of leveling is always at

6. If the level tube is out of adjustment by an angle e, when the telescope is rotated through 180°, it becomes

7. In a constant level tube, the size of the bubble remains constant because the upper wall of the tube has

8. The "point of tangency" of a simple circular curve is

9. The elevation (BM) of point A is 100 m. Backsight reading at A is 20, and foresight reading at B is 30 m. Find the RL of point B

10. If the distance between two points A and B is 1km, the combined correction for curvature and refraction will be

11. The designation of scale recommended by IS: 1491-1959 is

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

13. In plane table instrument for horizontal & vertical measurement without chaining

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

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

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

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

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

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

20. The sensitivity of the bubble tube can be increased by

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

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

23. In the whole circle system, the bearings are measured

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

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

26. If the sum of northing of a traverse exceeds the sum of southing by 2m and the sum of easting exceeds the sum of westing by 2m, the resulting closing error will be

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

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

29. For a station to be free from local attraction

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

31. The method of tacheometry in which the observation is made with stadia wires with a variable interval is known as

32. 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

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

34. Handles of chains are made of

35. The absence of chromatic aberration in a telescope is known as

36. The types of instrument generally used in the survey of gravity water supply system are:

37. If the length of a transition curve is such that the full super elevation is attained at the junction with the circular curve, the resultant curve is known as

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

39. Diurnal variation depends upon

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

41. The chord of curve less than peg interval is known as

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

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

44. The length of the perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to

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

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

47. A building is an obstacle to

48. *The instrument used to measure horizontal and vertical angle is

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

50. The angle subtended by the long chord of a simple curve at its center is equal to