Surveying Online Test – Paper 3

1. The perpendicular distance of the midpoint of the line from the reference meridian is known as

2. An offset scale always has the zero mark at

3. A series of closely spaced contour lines represent a

4. The instrument used for measuring area on a contour map is

5. Automatic level has advantages of

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

7. The orientation of the table is done by

8. The true bearing of a line can be calculated as (Where the declination is to the east.)

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

10. The upper plate

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

12. *The radius of curvature of the arc of the bubble tube is generally kept

13. The projection of a line on a plane parallel to the meridian is known as

14. Horizontal equivalent of a uniform slope must be

15. 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

16. The telescope is said to be normal when the

17. If the sights are vertical

18. In survey works, declination varies from time to time and place to place. The main important variation is

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

20. The angular error of closure or summation error should not exceed (Where N is the number of stations or sides.)

21. Under Survey, "working from whole to part" is done

22. A discrepancy is the difference between

23. The maximum allowable limit up to which a measurement may vary from the true value is known as

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

25. Tellurometer uses

26. The strength of fix' is poor when:

27. An imaginary line connecting the points of equal elevation on the ground surface is known as

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

29. Fifteen readings were recorded in a level field book. If the instrument was shifted after the 5th, 10th, and 15th readings, then the foresight readings are

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

31. Bench marks are fixed by

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

33. The device used in computing the horizontal and vertical distances rapidly and conveniently is

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

35. Sensitivity of a level tube is expressed by

36. For the route survey of a contour map, the method used is

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

38. Which one is the simplest survey?

39. A 20 cm theodolite means

40. 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)

41. Handles are connected to the link by

42. Different grades are joined together by a

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

44. Which one is wrong?

45. Theodolite is an instrument used for measuring

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

47. In a theodolite, staff readings for upper, middle, and lower crosshairs are 1.4, 0.9 & 0.4, respectively. If the height of the tower is 100m, then find the horizontal distance between the instrument station and the base of the tower

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

49. Working edge of alidade is called

50. The graduations in a prismatic compass are