Surveying Online Test – Paper 3

1. The included angles of the theodolite traverse are generally measured

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

3. 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

4. Placing the table over the station such that the station plotted on the sheet is exactly above the corresponding station on the ground is:

5. Local attraction in compass surveying may be due to

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

7. Chain surveying is used for a small area in

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

9. The advantage of anallatic lens is

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

11. Dumpy level is used when

12. When the following scale is the smallest one

13. Find the contour interval for the map, 1: 25000 in IS & FPS

14. Compensator is used to make the line of sight perpendicular to the vertical axis in the case of

15. The trunion axis or transverse axis is

16. The Normal chord of a curve should be

17. A leveling station is a point where:

18. Crosshairs in a surveying telescope are fitted

19. In a closed traverse,

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

21. The types of leveling used for Geodetic survey is

22. The error eliminated by taking the mean of both face observations is

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

24. The process of bringing the vertical circle to the right of the observer is called

25. Contour interval is proportional

26. The needle is adjusted for

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

28. Methods adopted for traversing are

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

30. The most probable value of an observed quantity available from a given set of observations is the one for which the sum of the square of errors is a minimum. This statement is called

31. Choose the correct statement:

32. Handles are connected to the link by

33. A scale representing either three units or only one unit and its fractions up to the second place of the decimal point is

34. If the magnetic bearing of the sun at noon at a place in the southern hemisphere is 150°, the magnetic declination at that place is

35. The sensitivity of the bubble tube expressed in terms of the angular value of one division of the bubble is given by

36. Bowditch's rule is applied to

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

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

39. If the included angle is less than 180°, the deflection angle is

40. The prismatic compass and the surveyor's compass respectively give

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

42. Intersection is preferred to radiation when:

43. While measuring horizontal distance by stepping method we should follow

44. The instrument used for centering the plane table accurately is:

45. The contour interval depends upon

46. A negative declination shows the magnetic meridian to the

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

48. The graduations in a prismatic compass are

49. The direct method of contouring is

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