Surveying Online Test – Paper 3

1. Contours are used to determine

2. The tie line is run through the survey to

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

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

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

6. 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

7. In leveling, the station where the back sight and foresight readings are taken is known as

8. Automatic level has advantages of

9. Personal error in leveling occurs due to

10. The Philadelphia rod is a type of

11. The intercept of a staff is

12. A poor fix of the table is:

13. Contour interval, within the limits of a map

14. 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

15. Butt rods are used for measuring

16. The "point of the curve" of a simple circular curve is

17. *When it is not possible to set up the level, midway between the two points, then the difference in elevation between them is measured by

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

19. The two-point problem is:

20. Angular surveying in which both the horizontal and vertical positions of a point are obtained by optical means is known as

21. Resection is the method employed for:

22. Chain surveying is used for a small area in

23. The maximum number of omitted measurements that can be calculated from latitudes and departures of a closed traverse is

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

25. 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

26. Any arbitrarily assumed level line from which vertical distances are measured is known as

27. Choose the correct statement:

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

29. The graduations in a prismatic compass are

30. A discrepancy is the difference between

31. The magnification of a telescope lens depends upon

32. Magnetic declination

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

34. The angle of intersection of the horizon mirror and the index mirror of an optical square is

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

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

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

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

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

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

41. Ten readings were recorded in a level field book. If the instrument was shifted after the 2nd and 6th readings, then the foresight readings are

42. *The line of collimation should be parallel to

43. The rise and fall method of leveling provides a complete check on

44. Dumpy level is used when

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

46. *The correction for refraction is given by

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

48. The reduced level of the line of collimation is 50m, and the staff reading at the base of the pillar is 1.15 m. Find the reduced level of the base of the pillar

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

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