Surveying Online Test – Paper 3

1. The size of the plane table is:

2. Azimuth (direct angles) is an angle measured in

3. The maximum permissible difference allowed while taking down the fore bearing and back bearing of a line is

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

5. The stadia hairs are not used in

6. The distance between terminal points computed from a subsidiary traverse run between them is known as

7. When several contours coincide, it indicates

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

9. A 30 m long tape was standardized at a temperature of 30°C; at the time of measurement, the temperature recorded was 35°C. Then the correction for temperature per tape length is (coefficient of thermal expansion = 0.0001116/°C)

10. 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

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

12. 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

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

14. Crosshairs in a surveying telescope are fitted

15. Level surface is parallel to

16. 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

17. For a tacheometer, the additive and multiplying constants are respectively

18. Plane table survey is considered good as compared to other surveys since:

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

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

21. The main difference between theodolite and level is:

22. Contour interval, within the limits of a map

23. In the intersection method of plane tabling, the number of stations needed to be set up is:

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

25. The theory of probability is applied to

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

27. In a double-line river, contours are

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

29. In a dumpy level, the objective and eyepiece lenses are made of two or more small lenses to obtain

30. Which of the following terms is not associated with leveling:

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

32. In survey, it was recorded that Σfall = 0 then

33. The direct method of contouring is

34. Well-conditioned triangle having an angle between

35. The image of the objectives formed should lie

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

37. The chain length which is not the standard metric chain length is

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

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

40. Angle of 45° with the chain line may be set out with

41. 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

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

43. 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

44. The optical square is based on the principle of

45. The two-point problem and three-point problems are methods of:

46. A traverse deflection angle is

47. A chain is made up of mild steel or galvanized iron wire of diameter

48. Offsets are

49. Negative errors are caused in the chain when its length is

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